How does an assessment centre work?
Updated:
- How does an assessment centre work?
- What may an employer test in a Swiss assessment centre, and which law applies?
- How do I prepare for an assessment centre?
How does an assessment centre work?
In short
An assessment runs from half a day to three days. In a group assessment several candidates work through the same exercises in front of several observers: a group discussion, a presentation, a role play, a case study, an in-basket exercise and a structured interview, often with intelligence, performance and personality tests alongside. At least two observers log every exercise independently, and each competence has to be observed in at least two different exercises. It ends with an observer conference, a written report and a feedback meeting you have a right to.
Practise the interview out loud, and see how you scored
An AI panel asks the questions and you answer by voice, the way the real call goes. Afterwards you get a pass probability and the moments that cost you.
Start a live practice interviewThe first thing to know about assessments in Switzerland is that the job advert will not tell you one is coming. Across the adverts live on SwissJobs.app, exactly one carries an explicit phrase such as "assessment centre" or "centre d’évaluation". The word "assessment" on its own appears in roughly one advert in three hundred — and in all but three of those it names a duty of the job rather than a stage of the hiring process: risk assessment, safety assessment, conformity assessment, clinical assessment. The three exceptions are vacancies at consultancies and a university of applied sciences, in other words jobs where someone runs assessments for a living.
So the invitation email is the moment the process becomes visible to you, and it is the moment to ask. Which exercises, how many observers, in which language, and what happens with the result. The Swiss quality standards for the AC method require that participants be told the basic purpose, the sequence and the opportunities and risks of the procedure in advance, and that they additionally receive information about the individual exercises so that differences in prior knowledge between candidates are levelled out. An employer that refuses to tell you is breaking the standard it claims to follow.
Share of the adverts live on SwissJobs.app on 23 August 2026, classified from title and summary. The groups can overlap.
- An AC has to simulate at least three different kinds of work situation, and every requirement has to be captured in at least two exercises — the standards call this the redundancy rule.
- A maximum of five requirements, better three, are observed per exercise, and each observer records an independent rating immediately after each exercise.
- About 21 per cent of the adverts on SwissJobs.app are one of several identical postings by the same employer — exactly the situation in which a group assessment pays for itself.
- Adverts for management roles ask for English in 49.1 per cent of cases against 41.5 per cent of all adverts, and for German in only 59.8 per cent against 68.1 per cent. The exercises run in the language the advert names.
- Under Article 25 of the Swiss Data Protection Act the information you request about data held on you is free of charge, is normally provided within 30 days, and the right cannot be waived in advance.
Inside the day: why everyone gets the same running order
An assessment is a half-day to three-day event involving at least one participant. The group assessment — what people mean colloquially by "assessment centre" — has several participants and several observers and usually runs over several days, with the observers rotating so that as many of them as possible see each candidate. The individual assessment has one participant and at least two assessors and normally takes half a day to a full day; its main target group is middle and top management.
The timetable is not an administrative detail, it is part of the method. The standards require that exercises take place in a comparable order for all participants, in order to avoid perception distortions caused by sequence effects. Running the same exercise in the morning for some candidates and late in the afternoon for others is listed explicitly as a breach. If you leave with the feeling that your group discussion happened when everyone was tired, that is a legitimate thing to raise in the feedback meeting.
Also prescribed: rooms that guarantee an undisturbed and confidential process, waiting times planned to be as short as possible, a facilitator who does not double as an observer, and the collection of exercise materials at the end of each exercise. Having your case study papers taken away is not petty — it protects the procedure, so the next group starts from the same position you did.
At the start you are briefed on the sequence and the rules that apply. In procedures with a development purpose you are told, before each exercise, which criteria will be observed and judged in it. That is the structural difference from an ordinary interview: a properly built assessment tells you what it is looking at.
The six exercises you will almost certainly meet
The group discussion gives the group a task and a time frame — usually half an hour to an hour — and leaves the structure and the approach to the participants. The task can be cooperative, with no conflicting interests, or competitive, with participants defending opposing positions. What is being observed is facilitation, problem-solving and social-interactive behaviour. Volume produces none of those three observations.
The presentation puts you in front of a group with a topic, either after a preparation phase in which you analyse and structure supplied material or with a subject defined on the spot. Alongside organisational and analytical ability, the standards state plainly that linguistic confidence in front of a group becomes visible here. That is a good reason to establish in advance which language the assessment runs in.
The role play simulates a dialogue you have to handle inside a set time: a negotiation, a sensitive conversation with a team member, a persuasion conversation with a defined goal. The person opposite you is a trained role player working from clear instructions designed to guarantee a standardised level of difficulty while still allowing them to respond to you appropriately. They are not playing against you; they are playing the same way for everyone.
The case study hands you written material on an organisational problem that is often multi-layered and complex. You work through the questions on your own, analyse the situation and develop decisions and alternative solutions — and deliberately receive no feedback while you do it. The in-basket exercise simulates the incoming mail of a manager who is new in post or has been away for a few days: 15 to 25 documents, memos, letters, reports, enquiries and irrelevant information, usually handled in writing and under heavy time pressure. It surfaces decision orientation, work organisation, prioritisation and the ability to spot connections.
Then there is the structured interview, where you are asked specific questions about specific experiences and about how you actually reacted in particular situations. Psychological tests may be added: intelligence tests built from number series, analogies, sentence completion and arithmetic under time pressure; performance tests covering attention and concentration; and personality questionnaires, which unlike the other two are explicitly not about producing a maximum score against a clock.
Who judges you, and under what rules
The quality standards for the AC method were first formulated in 1992, redrafted in 2004, and reviewed in spring 2007 by a working group of the Swiss assessment centre association — today Swiss Assessment — to see how far they needed adapting to Swiss conditions. The verdict was that no fundamental changes were needed; only the wording was adjusted. Nine standards now cover the brief, the requirements analysis, exercise design, observation and evaluation, the choice and training of observers, the preparation of participants, the running of the event, feedback, and evaluation of the procedure itself.
Two numbers matter most from a candidate’s side. First, the behaviour of every participant in every exercise is recorded independently by at least two observers. Second, to avoid judgement errors caused by overload, a maximum of five and preferably three requirements are observed in any one exercise. So the one observer who did not warm to you cannot sink you alone, and nobody is trying to measure twelve attributes in a thirty-minute discussion.
Observation must be kept separate from evaluation. During the exercise, what you said and did is logged; the rating follows immediately afterwards, made by each observer on their own before any discussion. Only then does the observer conference combine the data, following a procedure defined before the event and applied identically to everyone. Forming undifferentiated overall verdicts such as "good" or "poor" that cannot be traced back to observed behaviour is listed as a breach.
Observers drawn from the business come from at least one level above the target role, and anyone attending for the first time completes training beforehand — covering the separation of observation from evaluation, sources of error, and how to conduct the feedback conversation. In internal procedures, having a participant observed by their own direct line manager counts as a breach. The professional body describes the payoff soberly: two sets of eyes make it easier to spot people who merely present well, and give slow starters a better chance.
Where assessments actually happen in Switzerland
Twenty-three providers currently hold the Swiss Assessment quality label as certified AC providers. Certification is carried out with the involvement of the Swiss Association for Quality and Management Systems (SQS) and the work and organisational psychology unit of the University of Zurich, and it has to be renewed every three years. The list is not only consultancies: Swiss Federal Railways, the Military Academy at ETH Zurich, the police and security professions training centre in French-speaking Switzerland and several institutes of applied psychology are on it. That tells you where the method lives — public administration, the railways, the police, the army, large employers and talent programmes.
The cantonal police of Zurich describes its process openly: a multi-stage selection procedure with a fitness self-test, an entrance examination covering language knowledge and mental ability, and then an assessment in which candidates are also examined psychologically and by sports physicians with the help of specialists. Only after passing the whole procedure does a fixed-term contract for the basic training follow. In Geneva the cantonal police states that the interview phases follow a precise, structured framework whose purpose is to guarantee objectivity and fairness between participants, and that the questions address past behaviour and experience in order to assess potential. That is the textbook definition of a structured, behaviour-based selection interview.
The largest Swiss encounter with systematic aptitude testing, though, happens to fifteen-year-olds. Apprenticeships make up 6.8 per cent of the adverts on SwissJobs.app, and the official careers guidance service reports that aptitude tests are increasingly required when applying for one — sometimes compulsory, sometimes recommended, run by the training company, the professional association or an independent test provider. They cover school knowledge, intellectual and vocational ability and personality, in formats ranging from questionnaires to practical exercises to group workshops in which social competence is observed and which are sometimes role plays. They normally take place between February and May, and some are free while others cost roughly 20 to 150 francs.
The line the official service adds is the important one: test results are not the only selection criterion. The application dossier, trial apprenticeships, school performance and the interview count just as much, and average test results can be offset if the rest is strong. The same logic holds for adults. An assessment is one stage of a procedure, not the procedure.
For management roles — 6.3 per cent of our adverts — the extra effort shows up indirectly, in how long the advert stays open. Those adverts have a median age of 23 days against 20 for the market as a whole, and 43 per cent of them are older than thirty days against 40.1 per cent of all adverts. The sharpest case is graduate programmes, a very small group at 0.2 per cent of adverts: their postings have a median age of 46 days, more than double the market median, which is what fixed intake dates and a once-a-year selection day look like from the outside.
Your rights: feedback, access to the file, and the limits of what may be tested
Standard 8 of the Swiss AC standards is unambiguous: every participant has the right to individual feedback so that they can understand the outcome and learn from it. In practice that means a feedback conversation within a reasonable period, held in private with one or two of the observers, and based exclusively on observations from the AC exercises and the result of the observer conference. A written summary of the results is recommended on top. Feedback made of blanket statements such as "you lack social competence" is listed as a breach.
The legal layer is data protection. Under Article 25 of the Data Protection Act, anyone may ask a controller whether personal data relating to them is being processed, and is entitled to the processed data as such, the purpose of processing and the retention period, among other things. That information must be provided free of charge, as a rule within 30 days, and nobody can waive the right in advance. An assessment report about you is personal data about you.
Article 6 of the same Act requires that processing be carried out in good faith and be proportionate, that data be collected only for a specific purpose the person concerned can recognise, and that it be destroyed or anonymised as soon as it is no longer needed for that purpose. Read together with Article 328b of the Code of Obligations — data may be processed only in so far as it concerns suitability for the employment relationship or is necessary for performing the contract — that draws a clear line. A personality questionnaire probing areas that have nothing to do with the target role is on weak ground.
And if a purely machine-made evaluation screens you out, Article 21 obliges the controller to inform you about a decision based exclusively on automated processing that significantly affects you. On request you may state your point of view, and you may demand that the decision be reviewed by a natural person.
Preparing without acting
The standards draw the line themselves. Preparation for an AC is supposed to include competence-oriented coaching, for example in presentation technique, and is explicitly distinguished from deception strategies such as rehearsing fixed role behaviour. From the other side, instructions that contain behavioural orders — "be reserved during this exercise" — are listed as a breach of exercise design, because they turn a simulation into a piece of theatre. Both sides are supposed to want the same thing: your actual working behaviour in a situation that resembles the job.
Practically, that means three things. Ask for the requirement profile, because that is exactly what is being observed, and the transparency principle says the criteria should be disclosed to you anyway. Settle the language question: management adverts ask for English in 49.1 per cent of cases and German in 59.8 per cent, against 41.5 and 68.1 per cent across all adverts, and a group discussion in your second language is a different exercise from one in your first. And plan for a full day — only 3.1 per cent of management adverts are part-time, and the procedures are not built around half days.
Practice pays off where the exercise is structured. The structured interview asks about specific experiences and about how you actually reacted in given situations, so what you need is five to seven well-chosen examples from your working life, not memorised sentences. In the presentation, structure counts for more than charisma, because organisational and analytical ability is what is written on the observation sheet. For the in-basket, decide your prioritisation rule before you sit down. And in the group discussion, facilitation is an observed criterion: moving the group towards a result produces more observable behaviour than talking the longest.
Market figures come from a count of the adverts live on SwissJobs.app on 23 August 2026. Classification into apprenticeships, management roles, internships and graduate programmes is derived from the title and summary and the groups can overlap; the graduate-programme group is very small, so its median values are correspondingly imprecise. Language shares refer to the just under three quarters of adverts that state an explicit language requirement. Advert age is based on the publication date. The procedural rules reproduce the quality standards for the AC method as published by Swiss Assessment; they are binding on certified members, not on every employer. Legal points are not legal advice; in an individual case your employment contract, any applicable collective agreement and the guidance of your RAV apply.
What may an employer test in a Swiss assessment centre, and which law applies?
In short
"Assessment centre" is not a legal term in Switzerland. The words appear in neither the Code of Obligations, the Labour Act, the Data Protection Act, the accident insurance legislation nor the federal personnel acts. What binds the employer is decided not by the format of the day but by who is running it: a private company answers to the Code of Obligations and the federal Data Protection Act, a federal office additionally to the Federal Personnel Act, and a canton or a commune to cantonal law the Confederation does not write.
This answer explains what the cited acts say and is not legal advice. Cantonal rules differ; binding information comes from the data protection authority of the canton concerned, from a legal advice service, or for federal bodies from the competent human resources unit.
Practise the interview out loud, and see how you scored
An AI panel asks the questions and you answer by voice, the way the real call goes. Afterwards you get a pass probability and the moments that cost you.
Start a live practice interviewFor a reader applying in English this has a measurable consequence. Of the adverts in our index written in English, 0.5 per cent come from a public employer, against 9.2 per cent of the German ones and 10.5 per cent of the French ones. If you apply in English, you will almost always be in the private-law world — and if you do meet a cantonal selection procedure, it will very likely be conducted in German or French, in a legal framework that has no English version at all.
This answer sits beneath the description of the day itself further up this page. That one covers the exercises, the observers and the feedback interview. This one covers what may be collected, recorded and passed on while that day runs, and where it is written down.
Share of the adverts open on 30 August 2026 in each posting language. Bases: German and English several thousand each, French about two thousand, Italian just over three hundred and therefore the thinnest of the four. Employer type assigned from the advertiser's name, so a floor.
The words are in no statute — counted, not assumed
On 31 August 2026 we pulled the versions in force of seven federal acts from Fedlex and searched their full text: the Code of Obligations, the Labour Act, the Data Protection Act, the Accident Insurance Act, the Accident Insurance Ordinance, the Federal Personnel Act and the Federal Personnel Ordinance, each in the German, French and Italian version. The word "Assessment" occurs in none of them. Nor does it occur in the three cantonal data protection acts we read for this answer, from Lucerne, Valais and Graubünden.
The only hits sit in the English translations of the Code of Obligations and the Data Protection Act, where "assessment" is simply the English word for an evaluation or an appraisal. It names no selection procedure. Looking for a rule that applies "to assessment centres" therefore means looking for something that does not exist.
That is not a gap. It is how Swiss employment law is built: it regulates relationships and data processing, not event formats. A role play, an in-tray exercise and a personality questionnaire are not a legal category of their own. They are data processing — and data processing is regulated in detail, just separately for each type of employer.
The practical consequence is that the first question before an assessment is not what will happen but who is inviting you. That single answer settles which act applies, which authority supervises it, and whom you ask about your own file.
Three legal regimes, and how often each one appears in the adverts
We sorted the adverts open on 30 August 2026 into four groups by the advertiser's name. Federal bodies — federal offices, state secretariats, the Federal Chancellery, federal courts — account for 0.5 per cent. Cantonal and communal administrations, meaning cantons, cities, communes, directorates, offices, public prosecutors and cantonal police forces, account for 2.8 per cent. Hospitals, clinics, universities, universities of applied sciences and care institutions come to 4.7 per cent. The remaining 92.1 per cent are private employers.
That ordering is why most English-language advice on assessment centres misses Switzerland twice over. It is written either for a company or for a national civil service. The numerically most important public employer here is neither: it is the canton, the city and the commune, together more than five times the federal share.
The classification comes from the advertiser's name and is therefore a floor. Where a canton advertises through an agency, it counts here as private. And the name does not settle which law actually applies — more on that below.
For a candidate the sequence is short. If the advert names a canton, a city or a commune, cantonal data protection law governs. If it names a federal office, federal personnel law applies on top. If it names a company, the Code of Obligations and the federal Data Protection Act apply.
With a private employer, the yardstick is suitability
For the large majority of adverts the position fits in one sentence. Article 328b of the Code of Obligations allows an employer to process data about you only insofar as it concerns your suitability for the employment relationship or is necessary to perform the contract of employment; otherwise the Data Protection Act applies. That is the standard against which every exercise in an assessment is measured.
The interesting part is the output. An assessment does not produce a mark. It produces a report summarising essential characteristics of a person — resilience, leadership behaviour, handling of conflict. That kind of compilation has its own name and its own protection in Swiss data protection law. The federal act calls it profiling; the cantonal acts continue to work alongside it with the older concept of a personality profile.
The distinction is not merely terminological. A personality profile is more than the sum of its parts: three observations that are harmless individually become an appraisal that outlives one application. This is why all three cantonal acts we read treat a profile expressly more strictly than an ordinary data item, and why who receives the report and how long it is kept is the question that matters most in an assessment.
One sentence of the federal act is the one most often skipped, and it is Article 2: the Act applies to the processing of personal data of natural persons by private persons and by federal bodies. Cantons and communes are not in that list.
A canton and a commune answer to a different act, and it is not written in Bern
This is where most guidance goes wrong. Someone applying to a cantonal police force, a city administration or a cantonal directorate cannot rely on the federal Data Protection Act for their assessment. The data protection act of that canton governs, and the cantonal data protection authority supervises it, not the Confederation.
The Lucerne cantonal data protection act, in the version in force since 1 June 2025, shows what that looks like. It defines as particularly sensitive personal data, among other things, "Zusammenstellungen von Daten, die eine Beurteilung wesentlicher Aspekte der natürlichen Person erlaubt (Persönlichkeitsprofil)" — compilations of data allowing an appraisal of essential aspects of the person, which is the definition of an assessment report without the word appearing. Paragraph 5 subsection 2 then sets out when a public body may process such data at all: where a formal statute expressly provides for it, where it is indispensable to a task defined by statute, where the cantonal government authorises it, or where the person concerned has consented in the individual case.
The other cantons are built the same way in their own wording. The Valais act on public information, data protection and archiving requires a basis in a statute in the formal sense for profiling, and provides that consent must be "libre, spécifique, éclairé et non équivoque". The Graubünden cantonal data protection act, in force since 1 January 2026, requires express consent for a personality profile or for profiling, alongside a legal basis.
The right of access follows the same pattern: it is in the cantonal act, not the federal one. In Lucerne, paragraph 15 obliges the responsible body to disclose at least the personal data held, the legal basis and purpose of the processing, so far as possible the origin of the data and any recipients, the retention period and the person's own rights — and, so far as the means allow, to grant inspection. Paragraph 16 lists the grounds on which disclosure may be limited or refused.
Cantonal variation here is not an exception to the system. It is the system. What is a subsection in Lucerne is an article on legality in Valais and a paragraph on express consent in Graubünden. The direction agrees across all three; the deadlines, the exceptions and the competent authority do not.
Note that none of these three cantonal acts exists in English. Neither does the Federal Personnel Act, the Federal Personnel Ordinance or the Information Security Act — Fedlex carries the Federal Personnel Act in German, French, Italian and Romansh, but not in English. The Data Protection Act and the Code of Obligations do have official English translations, and those two are precisely the ones covering the private employers that 92.1 per cent of adverts come from.
A federal employer may do things a company may not
Federal bodies are the smallest group by number and the most densely regulated by law — and some of what they may ask goes well beyond what a company could. Article 20a of the Federal Personnel Act allows the employer to require job applicants to produce an extract from the criminal record and from the debt enforcement register, "if this is necessary to protect its interests". Article 94e of the Federal Personnel Ordinance adds that the employer bears the cost of the extracts.
Article 20b of the same act permits a loyalty check, but only for three named kinds of function: people who regularly represent Switzerland abroad, people who take decisions or exercise supervision in significant financial or tax matters, and people carrying out criminal prosecution or policing tasks. Subsection 2 states expressly that the check is to be limited to what is strictly necessary.
Health data is governed by Article 28. The competent medical service processes the particularly sensitive health data needed for the suitability assessment at recruitment, and may disclose the conclusions drawn from medical findings to the interested departments only so far as this is necessary to assess fitness for the post, for insurance or for the work. The finding itself does not reach the hiring manager; the conclusion does, and only to the extent needed.
Article 24 of the Federal Personnel Ordinance allows the competent body, where the function requires it, to make appointment conditional on criteria such as age, prior education or capacity to act; for security-relevant activities it may additionally depend on passing a medical fitness examination. Anyone applying to the federal administration expecting an ordinary recruitment process routinely underestimates how formal it is.
The second procedure that runs alongside the assessment
For security-sensitive functions a second, self-standing procedure runs beside the selection: the personnel security screening under the Information Security Act. It is not part of the assessment, but it happens in the same window, and most candidates hear of it for the first time when the form arrives.
Article 27 sets out the purpose and the content: what is assessed is whether a risk to information security could arise, and for that purpose data is processed about the person's conduct of life, in particular their close personal relationships and family circumstances, their financial situation and their connections abroad. Data about the exercise of constitutional rights may be processed only where there is a concrete suspicion.
Article 30 distinguishes two levels. For the basic screening, Article 34 names seven sources of data — the criminal record, the criminal justice authorities, federal security bodies, cantonal security and police registers, the debt enforcement and bankruptcy authorities, the files of earlier screenings, and publicly accessible sources. The extended screening adds four more: tax authorities, residents' registers, financial institutions and banks with which the person has a business relationship, and an interview with the person.
Two provisions belong to the person being screened. Article 32 states that a screening may be carried out only with their consent — conscripts and members of the armed forces and civil protection excepted — and that they are obliged to cooperate in establishing the facts. Article 44 gives them thirty days from receiving the declaration to inspect the screening file, to demand correction of incorrect data or destruction of data no longer current, and to have a note added recording that data is disputed.
The outcome is not a score but one of four declarations under Article 39: a security declaration, a security declaration with reservations, a risk declaration, or a finding declaration where there is not enough data over a sufficient period to make an assessment. Before the last three, the person must be given the opportunity to comment. And the procedure is not limited to federal staff: under Article 29 subsection 1 letter b, employees of a canton who carry out a security-sensitive activity are screened too, and under Article 36 subsection 3 the Confederation bears the cost.
You cannot tell from the name
The practical difficulty is that the regimes are not legible from the letterhead. Our index holds 140 distinct public-sounding advertisers. In 10.7 per cent of them a company form is written out in the name — Kantonsspital Baden AG, Spital Thurgau AG, Spitäler fmi AG, Universitäres Psychiatrisches Zentrum Bern AG. In the rest it is not, which does not mean there is none.
The contrast is visible in a single line. Luzerner Kantonsspital carries no company form; Kantonsspital Baden carries an AG. Both are called a cantonal hospital and both belong to a canton's health provision — but which data protection law governs your assessment is decided by the legal form and the cantonal act, not by the word in the name.
The cantonal acts anticipate this blur themselves. The Graubünden act expressly counts as public bodies "le persone fisiche o giuridiche o altre organizzazioni di diritto privato per quanto adempiano compiti pubblici loro delegati" — private organisations, so far as public tasks have been delegated to them. The Valais act additionally names private-law legal entities in which a public authority holds a majority participation or exercises a dominant influence.
If you want certainty there is a short route: ask in reply to the invitation who is responsible for the data processing and under which act. The responsible body owes you that information in any case — the Lucerne act requires it at paragraph 8 already at the point of collection, together with the purpose, the retention period and the recipients.
Where you apply changes the odds
The share of public employers is very unevenly spread. Measured against the adverts that can be assigned to a canton — 69.4 per cent of the open stock — Lucerne leads at 35.4 per cent, followed by Fribourg at 33.9 per cent. Then come Bern at 12.8, Aargau at 12.0 and Basel-Stadt at 9.0 per cent. Zurich sits at 4.5, Zug at 3.1, Geneva at 2.3 and Vaud at 0.8 per cent.
Two of those figures need context or they will be read wrongly. The Lucerne peak is almost entirely one employer: 91.6 per cent of the canton's public adverts come from Luzerner Kantonsspital, which on its own accounts for 32.4 per cent of all adverts in the canton. Fribourg's figure is more spread out but is still carried by the cantonal administration — the Etat de Fribourg alone stands behind 22.9 per cent of the canton's adverts.
The gap between Fribourg and Vaud — 33.9 against 0.8 per cent — is larger than any difference between the language regions. That is worth knowing if you are searching several cantons at once: the same function can be advertised under cantonal personnel and data protection law in one canton and under the Code of Obligations in the one next door.
Cantons with fewer than three hundred assignable adverts are left out here, because a percentage on so thin a base suggests more than it carries. That excludes Graubünden, Ticino, Schaffhausen, Glarus and Jura, among others.
What this means, and where this answer stops
In short: there is no assessment-centre law. There is data protection and personnel law, drawn from a different source depending on the employer. The report at the end of the day is the most sensitive processing in the whole procedure under all three regimes, because it counts as a personality profile or as profiling rather than as a note.
If you want to know what was recorded about you, the route runs through the right of access in the act that governs — Article 25 of the federal Data Protection Act for a private or federal employer, paragraph 15 of the cantonal act in Lucerne, Article 31 in Valais, Article 24 in Graubünden. Which of those is your case is settled by the employer in the advert, not by the type of procedure.
One boundary belongs to this answer. We explain what the acts we read on 31 August 2026 say. We do not tell you what to do, and we do not assess your case. For a binding view, the cantonal data protection authority of your canton, a legal advice service or — where an employment relationship already exists — a trade union are the right addresses. With cantonal acts there is the further point that deadlines and exceptions differ from canton to canton; the three we read stand here as examples, not as a national rule.
Our own analysis of the adverts open on 30 August 2026. The split into federal, cantonal or communal, institutional and private comes from the advertiser's name and is a floor: where a public authority advertises through an agency it appears here as private. The name also does not settle the legal form — 10.7 per cent of public-sounding advertisers carry a company form in the name. Canton figures cover the 69.4 per cent of adverts that can be assigned to a canton; cantons under three hundred assignable adverts are omitted. Only shares are published, never absolute stock figures. The statutes were read on 31 August 2026 in the version then in force: the federal acts via Fedlex, the Lucerne cantonal data protection act in the version of 1 June 2025, the Valais LIPDA in the version of 1 January 2024 and the Graubünden act in the version of 1 January 2026. The Lucerne, Valais and Graubünden acts have no English version and are quoted here in German, French and Italian respectively.
How do I prepare for an assessment centre?
In short
You cannot prepare for a Swiss assessment centre in general. The Swiss quality standards for the method require the exercises to be built from a work and requirement analysis of that specific job, and they list borrowing another company's requirement catalogue as a breach. The same standards oblige the employer to give participants information about the individual exercises and about sensible preparation strategies. So the preparation that pays comes after the invitation, in what you ask for — and in reading where the form you fill in beforehand sends your data.
This answer explains what the cited acts and standards say and is not legal advice. Cantonal rules differ; binding information comes from the data protection authority of the canton concerned, from the Federal Data Protection and Information Commissioner, or from a legal advice service.
Practise the interview out loud, and see how you scored
An AI panel asks the questions and you answer by voice, the way the real call goes. Afterwards you get a pass probability and the moments that cost you.
Start a live practice interviewBecause the first stage of the procedure is almost never an exercise. It is an account. Across the adverts open on our board, the apply link leads to a .ch address in 37.9 per cent of cases, to .com in 41.9 per cent, to .jobs in 7.2 and to .io in 3.7. If you apply in English, that picture inverts: English-language adverts route to a .ch address in only 4.2 per cent of cases and to .com in 72.6. Where your data goes is settled before anyone observes you at all.
This answer sits alongside the two others on this page. How the day itself runs — the exercises, the observers, the feedback interview — is covered there, as is the question of which law applies to which employer. This one is about the weeks before: what happens between the invitation and the date, what you can ask for in that window, and what you have already handed over by then. Everything below was checked at source on 31 August 2026.
Share of the English-language job adverts open on our board on 30 August 2026. The ending tells you what the address looks like, not where the data is held.
- Standard 2 of the Swiss AC standards: an aptitude assessment can only be designed meaningfully on an exact analysis of the concrete requirements, and the reference point is «the specific activity in the specific company».
- The same standard lists as a breach the simple adoption of requirement catalogues from external consultants or from other companies — which is what a generic assessment course sells.
- Standard 6 requires additional information «on the individual exercises and on sensible preparation strategies», and lists concealing the observation categories as a breach.
- Pre-selection tests and pre-interviews are permitted under Standard 6 only where they relate to the requirements identified for the target function.
- Article 19 paragraph 4 of the Swiss Data Protection Act: if your data is disclosed abroad, the controller must also tell you the State it goes to, and which safeguard it relies on.
In this procedure, «preparation» has a definition
The term assessment centre is not protected in Switzerland, but there is a professional benchmark that certified providers submit to: the quality standards for the AC method published by Swiss Assessment. Nine standards cover the whole construction process, and two of them decide whether general preparation can make sense at all.
Standard 2 is the work and requirement analysis, and it opens with a sentence that almost answers the preparation question by itself: an aptitude assessment can only be designed meaningfully on the basis of an exact analysis of the concrete requirements. The output of that analysis is a requirement profile summarising what the standard calls the success-critical aspects of the activity. And among the framework conditions it states explicitly that the reference point for the analysis is the concrete activity in the specific company.
Standard 3 draws the consequence for the exercises: AC exercises simulate work situations that decide the success or failure of someone holding the target function in their daily work. A case study for a hospital directorate and a case study for a retail branch manager are therefore not two variants of one task. They are two different tasks.
What the standards list as breaches is the revealing part. They include the simple adoption of existing requirements from other target groups, or of requirement catalogues from external consultants or other companies; the collection of general trait names without concretising their content; and doing without a specific requirement analysis in favour of general lists of ability characteristics. Those are charges against the employer, not against you. But they describe exactly the product a generic assessment-preparation course sells: a general list of ability characteristics.
So asking what to drill is asking in the wrong place. A properly built procedure tests the requirements of this one job. A procedure you could prepare for in general would already have broken the second standard.
What the employer owes you before the day
Standard 6 is titled pre-selection and preparation of participants, and it is the only place in the whole framework where your preparation appears at all. It does not treat it as your private business but as a task of the procedure: additional information on the individual exercises and on sensible preparation strategies is to be given, in order to level out different knowledge backgrounds between participants and to allow them to gather experience of the AC situation.
The reason is measurement accuracy rather than courtesy. If one candidate has sat three assessments and another has sat none, the procedure is partly measuring familiarity instead of aptitude. The standards call that the differing knowledge background and require that it be levelled out, preferably through standardised advance information — written documents, so that every participant has the same information.
Two further sentences matter for the weeks before. First: only candidates with realistic prospects of success take part in an AC. On this standard, an invitation is already a statement. Second, on pre-selection: tests and pre-interviews are in principle available, but only if they relate to the requirements identified for the target function. The online test that appears between your application and the assessment day is therefore not a separate warm-up; it belongs to the same procedure and is bound to the same requirement analysis.
And in the breach list of the same standard sits the sentence that justifies asking after the invitation: it is a breach if no clear objectives are given for the individual exercises, or if the observation categories are concealed. Also listed: self-nominated participants receive no preparation and are therefore at a disadvantage compared with the others. In this framework, unequal preparation is not the reward of the diligent. It is a defect of the procedure.
One limit belongs with all of this. These standards bind the providers who have submitted to them. An employer running a selection day without a certified provider is not bound by them. The benchmark is still worth having — it is the only one the Swiss professional community publishes for this procedure.
The standards exist in one language only
A detail you only notice if you check it: the Swiss Assessment standards page serves the same German text under its German, French, Italian and English addresses. On 31 August 2026 the four pages were identical in text content.
If you are applying in Switzerland from abroad, or living here without German, this is worth knowing before you go looking. The rules that a certified assessment should be built to are readable, public and specific — and they are in German. There is no official English version to quote from.
The same caution applies to the law. The English text of the Data Protection Act on the federal law portal carries a notice of its own: English is not an official language of the Swiss Confederation, the translation is provided for information purposes only and has no legal force. The German, French and Italian versions are the ones that count.
The part of the procedure that runs before the day is a form
Before anyone observes a group discussion, you have opened an account, uploaded a CV and, depending on the procedure, completed an online test. That is the part of the preparation nobody calls preparation — and the only part where you are giving something away rather than learning something.
Where it goes can be read off the adverts. Across the job adverts open on our board, the apply link leads to a .ch address in 37.9 per cent of cases and to .com in 41.9, with 7.2 per cent on .jobs and 3.7 on .io. Split by the language the advert is written in, the values diverge sharply: German-language adverts reach a .ch address in 52.6 per cent of cases, French-language ones in 54.7, Italian-language ones in 79.8 — and English-language ones in 4.2, against 72.6 per cent on .com.
That last figure is the one to sit with. Applying in English in Switzerland is, in practice, applying through an international platform. It does not mean anything is wrong; it does mean the assumption that a Swiss job implies Swiss infrastructure is the wrong way round for this audience.
The domain ending does not tell you where your data is held, though. It tells you what the address looks like, and in Swiss recruiting the two come apart regularly in both directions. We opened the legal notices of the most-used application platforms on 31 August 2026 to see who stands behind them.
Behind umantis.com is Abacus Research AG in Wittenbach, canton of St. Gallen; behind dualoo.com is Dualoo AG in Goldach, also St. Gallen; behind rocken.jobs is Rocken AG in Zurich — three Swiss companies without a Swiss domain ending. In the other direction, smartrecruiters.com is SmartRecruiters, Inc. of San Francisco, teamtailor.com is Teamtailor AB of Stockholm, and join.com is JOIN Solutions GmbH of Berlin. Prospective.ch belongs to Prospective Media Services PMS AG in Zurich, where ending and domicile agree.
What the Data Protection Act already promises you at sign-up
Article 19 of the Data Protection Act is titled duty to provide information when collecting personal data. Paragraph 1 requires the controller to inform the data subject in an appropriate manner when collecting personal data, and states that this duty applies even where the data is not collected from you — a reference check, for instance.
Paragraph 2 sets the minimum. It must provide the controller's identity and contact details, the purpose of processing, and if applicable the recipients or categories of recipients to which personal data is disclosed. Translated into a selection procedure: who is responsible, what you are being tested for, and who receives the report. An external assessment provider is a recipient in that list.
Paragraph 4 is the one that the .com ending concerns: if the personal data are disclosed abroad, the controller shall also inform the data subject of the State or the international body to which such data are disclosed, and if applicable of the guarantees under Article 16 paragraph 2 or the application of an exception under Article 17. The State has to be named. Not on request — at collection.
This is where preparation becomes concrete rather than atmospheric. There is a text you can read before you fill in the form, and the law says what has to be in it. If the country is missing, a mandatory item is missing.
When the data leaves Switzerland
Article 16 paragraph 1 allows disclosure abroad if the Federal Council has decided that the legislation of the State concerned guarantees an adequate level of protection. That decision is not a judgement call but a list: Article 8 of the Data Protection Ordinance points to its Annex 1, which names the States, territories, specific sectors and international bodies with adequate protection.
The annex runs to forty-four numbered entries. Germany, France, Italy, Austria, Sweden, the Netherlands and the United Kingdom are on it, as are Canada, Israel, New Zealand and Uruguay. The last entry is the United States — with a condition written into the entry itself: an adequate level of protection is deemed guaranteed for personal data processed by organisations certified under the principles of the Swiss–US data protection framework. Not the United States as a country, but the certified organisation.
Where no such decision exists, Article 16 paragraph 2 lists five possible safeguards, among them data protection clauses in a contract notified in advance to the Federal Data Protection and Information Commissioner, standard data protection clauses the Commissioner has approved, issued or recognised, and binding corporate rules. Article 17 sets out exceptions, and the first of them is the data subject's express consent — the tick box in the application form.
That closes the chain. Annex 1 says which States need no further construction; Article 16 paragraph 2, which contracts are needed otherwise; Article 17, when your consent steps into that place; and Article 19 paragraph 4, that you have to be told which route was taken. All of it is checkable before you fill anything in, and it is the one part of preparing for an assessment that has nothing to do with nerves.
A canton or a commune applies a different act
One limit applies to everything in the two preceding sections. The federal Data Protection Act covers processing by private persons and by federal bodies. For a cantonal administration, a city or a commune, the data protection act of that canton applies instead, and supervision lies with the cantonal data protection authority rather than the federal one.
The cantonal acts carry comparable duties — information at collection, a right of access, special rules for personality profiles — but the article numbers, the deadlines and the exceptions differ from canton to canton. Which acts and which numbers those are in detail is the subject of the other answer further down this page.
For preparation this means only one thing: before you go looking for the country in a privacy notice, check who is inviting you. That decides which act the duty you are relying on is written in.
What can actually be prepared in the days beforehand
What follows from the standards is a short and fairly unexciting list, and it consists mostly of questions rather than exercises. Under Standard 6 the basic aim, the sequence and the information on the individual exercises are to be given to you anyway, so asking for them requests nothing the framework does not already provide for. The language of the procedure, its duration, the number of observers and whether it is a selection or a development procedure all belong in that set.
On content, the requirement profile is the only available syllabus, because Standard 2 requires the exercises to be derived from it. What the advert states as a requirement is the closest approximation you have before the invitation — and after the invitation you may ask for the profile itself.
For the written parts, one Swiss particularity is worth planning for. A Swiss dossier carries things a résumé does not: Arbeitszeugnisse, the employer references issued at the end of each job; a line stating your permit if you are not Swiss; and language levels given as CEFR grades rather than as «fluent». Online forms usually ask for these one field at a time. Assembling them in advance does not make the form faster, but it makes it consistent — and consistency between the form, the CV and what you say in the interview is the one thing visible across every exercise at once.
We are deliberately not telling you how to behave in the procedure. What the standards contain is a benchmark for the employer; what you make of it is your decision.
Where this answer stops
What is set out here is what those texts said on 31 August 2026: the quality standards for the AC method published by Swiss Assessment, the Data Protection Act, and the Data Protection Ordinance with its Annex 1. We do not assess an individual case and we do not tell you what to do.
The standards are an industry benchmark, not a statute; they bind the providers who have submitted to them. The data protection points apply to private employers and federal bodies; for a cantonal or communal employer, cantonal law applies with different deadlines and exceptions.
For binding information, the addresses are the data protection authority of the canton concerned, the Federal Data Protection and Information Commissioner, or a legal advice service. Where an employment relationship is already running, a trade union is a further one.
Our own count of the job adverts open on our board on 30 August 2026. What was measured is the address the advert's apply link leads to, classified by the ending of that address. The split by advert language covers the roughly seven in ten adverts that carry a recorded posting language; the Italian-language group is the smallest at just over three hundred adverts and its value is correspondingly less precise. A domain ending says nothing about the State in which data is processed — the company domiciles quoted here come from the providers' own legal notices, opened on 31 August 2026. Only shares are published, never absolute stock figures. The procedural rules reproduce the quality standards for the AC method as published by Swiss Assessment; they bind certified members, not every employer. The Data Protection Act and the Data Protection Ordinance were read in the versions in force on 31 August 2026.
Sources
- Swiss Assessment — What is an assessment center?
- Swiss Assessment — Methodology: exercises and test procedures
- Swiss Assessment — Quality standards for the AC method
- arbeit.swiss (SECO) — Tips on applying for jobs
- Canton of Zurich — police officer: the selection procedure
- Data Protection Act (FADP), Art. 16, 17 and 19
- Code of Obligations, Art. 328b (English version on Fedlex)
- Federal Personnel Act (BPG), Art. 20a, 20b and 28 — German version, no English edition exists
- Federal Personnel Ordinance (BPV), Art. 24, 94e and 94f — German version
- Information Security Act (ISG), Art. 27–44 — German version
- Ordinance on Personnel Security Screening (VPSP), Art. 8 and 11 — German version
- Canton of Lucerne, cantonal data protection act (KDSG), in German
- Canton of Valais, LIPDA, in French
- Canton of Graubünden, cantonal data protection act, in Italian
- Swiss Assessment — quality standards for the AC method (German)
- Data Protection Ordinance (DPO), Art. 8 and Annex 1
- Abacus Research AG (umantis.com) — legal notice
- Dualoo AG — legal notice
- Prospective Media Services PMS AG — legal notice
- SmartRecruiters, Inc. — imprint
- Teamtailor AB — privacy policy
Related questions
What our job index says about the Swiss market
Computed live from our own index, not quoted from a study. Shares only, as of today.
Language the advert is written in
- Deutsch
- 60%
- English
- 23%
- Français
- 13%
- Italiano
- 3%
Of adverts that state a language requirement, the share asking for
- Deutsch
- 70%
- English
- 43%
- Français
- 21%
- Italiano
- 3%
19% posted in the last 7 days · Largest markets: Zürich 18% · Bern 10% · Genève 5% · Basel 5%