Service Engagement Letter Template for Switzerland

A Service Engagement Letter is your formal agreement that establishes the professional relationship between you as a service provider and your client in Switzerland. This document serves as both a contract and a clear roadmap for your business relationship, ensuring that all parties understand their obligations and expectations from the outset.

When do you need this document?

You need a Service Engagement Letter whenever you're providing professional services to clients in Switzerland. This includes consulting engagements, legal services, accounting work, IT support, marketing campaigns, or any specialized professional service. The document is particularly crucial when working with new clients, undertaking complex projects with multiple deliverables, or when services involve handling sensitive data or confidential information. Swiss business practice strongly favors written agreements for professional services, and many clients will expect this level of formality before commencing work.

Key legal considerations

Your Service Engagement Letter must clearly define the scope of services to avoid disputes about what is and isn't included in your engagement. Include specific deliverables, timelines, and performance standards to protect both parties. Pay careful attention to liability limitations and intellectual property ownership clauses, as these can significantly impact your legal exposure. If your services involve processing personal data, you must include data protection clauses compliant with the Swiss Federal Data Protection Act. Consider including termination clauses that specify how either party can end the engagement and what happens to work in progress. Professional indemnity insurance requirements and dispute resolution mechanisms should also be addressed.

Legal requirements in Switzerland

Under Swiss law, your Service Engagement Letter is governed by the mandate provisions of the Swiss Code of Obligations (Articles 394-406). This means you have a duty to perform services with due care and in the client's best interests. You must clearly state your fee structure and ensure compliance with Swiss VAT requirements if your annual turnover exceeds the registration threshold. The letter should specify which party is responsible for VAT payments and invoicing procedures. If your engagement involves non-compete clauses or confidentiality agreements, these must comply with Swiss Competition Act requirements and cannot unreasonably restrict competition. All terms must be written in clear, understandable language, and any unusual or onerous clauses should be specifically brought to the client's attention to ensure enforceability under Swiss consumer protection principles.