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When hiring new employees in Switzerland, you need a comprehensive offer letter that complies with Swiss employment law and clearly communicates the terms of employment. This document serves as your formal proposal to a candidate and, once accepted, establishes the legal foundation of your employment relationship under Swiss law.

When do you need this document?

You'll need an offer letter whenever you're extending a job offer to a prospective employee in Switzerland. This includes situations where you're hiring full-time or part-time employees, bringing on temporary workers for fixed-term contracts, or recruiting international candidates who require work permits. The offer letter is particularly crucial when hiring senior executives or specialists where compensation packages are complex, or when employing foreign nationals who need documentation for visa and work permit applications. You should also use this document when converting temporary workers to permanent positions or when promoting internal candidates to new roles with different terms and conditions.

Key legal considerations

Your offer letter must include several mandatory elements under Swiss law to ensure legal compliance and avoid future disputes. You must clearly specify the position title, start date, workplace location, and reporting structure. Compensation details including base salary, bonus structures, and payment frequency are essential, along with working hours and any overtime arrangements. The probationary period, which can be up to three months under Swiss law, must be clearly stated. You should also address confidentiality obligations, data protection compliance under the Federal Act on Data Protection, and any restrictive covenants such as non-compete clauses. Be aware that certain terms like excessive penalty clauses or unreasonable restrictive covenants may be deemed invalid under Swiss law.

Legal requirements in Switzerland

Swiss employment law, governed primarily by the Swiss Code of Obligations (Articles 319-362), requires specific provisions in your offer letter. You must comply with the Federal Act on Employment in Industry, Trade and Commerce regarding working hours, with a maximum of 45 hours per week for office workers and 50 hours for other employees. The Federal Act on Gender Equality mandates equal treatment provisions, so ensure your offer terms don't discriminate based on gender. For foreign employees, you must reference compliance with the Federal Act on Foreign Nationals and Integration. Your offer letter should specify the applicable collective bargaining agreement if relevant, outline the notice periods for termination (which vary based on length of service), and include mandatory social insurance contributions. Additionally, you must provide information about statutory vacation entitlements (minimum four weeks annually) and sick leave provisions as required under Swiss law.