If you run an SME in Switzerland, a good contract is not a declaration of mistrust but an instrument of clarity. It protects both sides, defines expectations, and creates the foundation for successful collaboration. In Switzerland, where legal certainty is highly valued, a professional contract is standard.

This guide shows you which elements a service contract should contain, what to particularly watch for, and how to negotiate fair conditions that protect both sides.

Why Written Contracts Are Important

“We don’t need a contract, we trust each other.” This statement is a warning sign, not a sign of trust.

Reasons for Written Contracts:

  • Clarity: What exactly is delivered, by when, at what price?
  • Legal Certainty: In disputes, the contractual situation is clear
  • Process Clarity: How are changes, problems, escalations handled?
  • Protection of Both Sides: Rights and obligations are balanced
  • Professional Standard: In Switzerland, written agreements are customary

A verbal contract is legally valid but difficult to enforce in disputes. The burden of proof lies with you, and statement stands against statement.

Code of Obligations (OR)

Service contracts in Switzerland are subject to the Code of Obligations. Relevant contract types:

  • Mandate (Art. 394-406 OR): Freelance services
  • Work Contract (Art. 363-379 OR): Production of a concrete work
  • Employment Contract (Art. 319-362 OR): For employment relationships

Important Difference:

  • Mandate: Careful execution is owed, not success
  • Work Contract: A specific result is owed

Most services (consulting, design, IT) fall under mandate, while construction or productive activities are often work contracts.

Freedom of Contract

In Switzerland, freedom of contract generally applies. You can agree on what you want as long as it does not violate mandatory legal provisions.

This Means:

  • Individual contract design is possible
  • Terms and conditions are not mandatory and can be overridden
  • Fair negotiation is possible and customary

The 10 Essential Contract Components

1. Contract Parties and Basics

What Must Be Included:

  • Complete names and addresses of both parties
  • Provider’s commercial register number
  • Date of contract conclusion
  • Reference to previous quotes or conversations
  • Contract type (mandate, work contract)

Checklist:

  • Both parties are clearly identified
  • Legal representation authority is clarified
  • For legal entities: signature authority checked

2. Service Description (Scope of Work)

The heart of every contract. The more precise, the better.

What Should Be Included:

  • Detailed Services: What exactly is being done?
  • Deliverables: What is concretely handed over?
  • Quality Standards: By what criteria is work performed?
  • Exclusions: What is explicitly NOT included?
  • Acceptance Criteria: When is the service considered rendered?

Example Web Design Contract:

Scope of Work:
- Concept and design of 8 main pages (Home, About, Services, etc.)
- Responsive design for desktop, tablet, mobile
- Integration of CMS (WordPress)
- Basic SEO optimization (meta tags, sitemap)
- Training for 2 people (4 hours)

Not Included:
- Content creation (texts, images)
- Ongoing maintenance after launch
- Additional pages or features
- Marketing or social media integration

Checklist:

  • Each service is individually and measurably described
  • Deliverables are concretely named
  • Exclusions are explicitly listed
  • Acceptance criteria are defined

3. Timeline and Milestones

What Should Be Included:

  • Project Start: When does work begin?
  • Milestones: Which intermediate results when?
  • Project End: When is overall service rendered?
  • Your Cooperation Obligations: What must you deliver when?
  • Consequences of Delay: What happens with non-compliance?

Example Timeline:

Milestone 1 (Week 2): Concept and wireframes
Milestone 2 (Week 4): Design drafts
Milestone 3 (Week 6): Technical implementation
Milestone 4 (Week 8): Testing and training
Milestone 5 (Week 10): Launch and acceptance

Important: Also define what happens if you as client fall behind (e.g., delayed content delivery).

Checklist:

  • Start and end dates are defined
  • Milestones have clear deadlines
  • Your cooperation obligations are scheduled
  • Regulations for delays are established

4. Compensation and Payment Terms

What Should Be Included:

  • Total Compensation: How high is the total amount?
  • Pricing Model: Fixed price or effort-based?
  • Payment Schedule: When is what paid?
  • VAT: Is VAT included or added?
  • Incidental Costs: Who bears travel costs, materials, etc.?
  • Payment Deadline: Within how many days must payment occur?
  • Default Interest: What applies for late payment?

Example Payment Schedule:

Total Compensation: CHF 25,000 (excl. 8.1% VAT)

Payment Schedule:
- 30% (CHF 7,500) upon contract signing
- 30% (CHF 7,500) after acceptance of Milestone 2
- 30% (CHF 7,500) after acceptance of Milestone 4
- 10% (CHF 2,500) after final acceptance

Payment Deadline: 30 days net
Default Interest: 5% p.a.

Best Practice Switzerland:

  • Down payment: 30-50%
  • Milestone payments: 20-40%
  • Final payment: 10-20%

Checklist:

  • Total amount is clear and VAT is specified
  • Payment schedule is linked to milestones
  • Payment deadlines are defined
  • Regulation for incidental costs is clear

5. Changes and Additional Services (Change Management)

No project runs exactly according to plan. Therefore, regulation for changes is essential.

What Should Be Included:

  • Change Process: How are scope changes requested?
  • Evaluation: How are time and cost impacts determined?
  • Approval: Who must approve changes?
  • Price Adjustment: How are additional services calculated?
  • Documentation: How are changes recorded?

Example Change Request Process:

1. Client submits written change request
2. Contractor evaluates within 5 business days
3. Offer for change incl. time and cost impact
4. Client approves or rejects
5. Upon approval: Update of timeline and budget
6. Change is documented in writing

Checklist:

  • Change process is defined
  • Evaluation criteria are clear
  • Approval process is established
  • Prices for additional services are regulated

6. Warranty and Liability

Warranty:

In work contract law, the legal warranty period is 2 years (can be contractually regulated differently).

What Should Be Included:

  • Warranty Duration: How long are defects fixed free of charge?
  • Defect Notice: How and within what timeframe must defects be reported?
  • Remediation: How is correction done?
  • Warranty Exclusions: What is not covered?

Liability:

What Should Be Included:

  • Liability Scope: For which damages is the provider liable?
  • Liability Limitation: Are there upper limits?
  • Insurance: Does professional liability insurance exist?
  • Your Liability: For what are you liable as client?

Example Liability Clause:

Liability:
The contractor is liable without limitation for damages based on
intent or gross negligence. For slight negligence, liability is
limited to the contract sum.

Excluded is liability for:
- Indirect damages or consequential damages
- Lost profit
- Data loss with missing backups by client

The contractor has professional liability insurance with coverage
of CHF 2,000,000.

Checklist:

  • Warranty duration is defined
  • Defect notice process is clear
  • Liability scope and limits are established
  • Insurance proof is available

7. Intellectual Property Rights (IP Rights)

Who owns what is created in the project?

Relevant Rights:

  • Copyright: Design, code, texts, graphics
  • Trademark Law: Logos, brand names
  • Usage Rights: Who may use what how?

What Should Be Included:

  • Right Ownership: Who owns the rights?
  • Usage Rights: Which rights are transferred?
  • Scope: Exclusive or non-exclusive?
  • Portfolio Use: May the provider show the project as reference?

Typical Regulations:

Complete Rights Transfer:

All works created within this project transfer to the ownership of
the client with full payment. The contractor retains the right to
use the project anonymized as reference.

Usage Rights Without Ownership Transfer:

The client receives unlimited, non-exclusive usage rights to all
created works. Copyright remains with the contractor.

Checklist:

  • Right ownership is clarified
  • Usage rights are defined
  • Scope (exclusive/non-exclusive) is established
  • Portfolio use is regulated

8. Confidentiality and Data Protection

Confidentiality (NDA Elements):

What Should Be Included:

  • What counts as confidential?
  • How long does confidentiality obligation apply?
  • What exceptions exist?
  • What happens with violation?

Data Protection:

Particularly important since revision of Data Protection Act (revDSG).

What Should Be Included:

  • Data Processing: Which data is processed?
  • Legal Basis: On what basis?
  • Obligations: Who is controller, who is processor?
  • Technical Measures: How is data protected?
  • Data Deletion: What happens after project end?

Example:

Confidentiality:
Both parties commit to treat all information obtained within this
project confidentially and not disclose to third parties. This
obligation continues after contract end.

Data Protection:
The contractor processes personal data exclusively according to
client instructions and according to revDSG. Technical and
organizational measures per separate annex are implemented.

Checklist:

  • Confidentiality obligation is defined
  • Data protection compliance is ensured
  • Roles (controller/processor) are clarified
  • Technical protection measures are described

9. Termination and Contract End

What Should Be Included:

  • Ordinary Termination: Under what conditions can termination occur?
  • Notice Period: How long is the period?
  • Extraordinary Termination: When is immediate termination possible?
  • Consequences: What happens with termination?
  • Partial Payments: How is already rendered service compensated?

Example:

Ordinary Termination:
Both parties can terminate the contract with 30 days notice to the
end of a calendar month. Already rendered services are compensated
according to effort.

Extraordinary Termination:
In case of material breach (payment default >60 days, gross breach
of duty), the contract can be terminated immediately.

Checklist:

  • Termination conditions are defined
  • Notice periods are established
  • Reasons for extraordinary termination are stated
  • Regulation for partial payments is clear

10. Final Provisions

What Should Be Included:

  • Jurisdiction: Which court is competent?
  • Applicable Law: Which law applies (Swiss law)?
  • Severability Clause: What happens with invalidity of individual clauses?
  • Written Form: Must changes be in writing?
  • Completeness: Does this contract replace all earlier agreements?

Example:

Applicable Law and Jurisdiction:
This contract is subject to Swiss law. Jurisdiction is Zurich
(or seat of contractor).

Written Form:
Changes and supplements to this contract require written form.

Severability Clause:
Should individual provisions be invalid, the remaining contract
remains valid.

Checklist:

  • Jurisdiction is established
  • Applicable law is defined
  • Written form requirement is regulated
  • Severability clause is included

Reviewing Terms and Conditions

Many providers work with terms and conditions. These are legally binding if you agree to them.

What You Should Check

  • Scope of Services: Matches with quote?
  • Liability Exclusions: Are these reasonable or one-sided?
  • Payment Terms: Are these fair?
  • Termination Rights: Can you terminate or only the provider?
  • Choice of Law: Does Swiss law apply?

Negotiate Instead of Accept

Terms and conditions are negotiation basis, not dictate. If you dislike clauses:

  1. Address it
  2. Suggest alternatives
  3. Get changes confirmed in writing

Important: Individual agreements in contract override terms and conditions.

Contractual Fairness: Win-Win Instead of One-Sidedness

A good contract protects both sides fairly.

Warning Signs for One-Sided Contracts:

  • All risks lie with client
  • No or very short warranty
  • Excessive contractual penalties for termination
  • No termination possibility for you
  • Unlimited liability on your part, none with provider

Fair Contracts Include:

  • Balanced risk sharing
  • Mutual termination rights
  • Reasonable liability limitations
  • Fair payment terms
  • Clear processes for both sides

When Do You Need a Lawyer?

Negotiate Yourself With:

  • Standard projects under CHF 20,000
  • Clear, fair standard contracts
  • When you have experience

Consult Lawyer With:

  • Projects over CHF 50,000
  • Complex, multi-year contracts
  • Unclear or one-sided conditions
  • High financial or legal risks
  • When you are uncertain

Costs: 1-2 hours lawyer time (CHF 300-600) for contract review are cheap insurance against expensive disputes.

Checklist: Contract Review Before Signing

  • All 10 essential elements are included
  • Scope of services is precise and complete
  • Timeline and milestones are realistic
  • Payment schedule is fairly structured
  • Change process is defined
  • Warranty and liability are balanced
  • Copyrights are clarified
  • Confidentiality and data protection are regulated
  • Termination rights are fair
  • Final provisions are complete
  • With T&Cs: No one-sided clauses accepted
  • With uncertainties: Legal review obtained
  • Both parties sign

Contracts That Protect You

A good contract is the foundation of every professional service relationship. It creates clarity, defines expectations, and protects both sides.

Invest the time in careful contract review. The ten essential elements: service description, timeline, compensation, change management, warranty, liability, IP rights, confidentiality, termination, and final provisions should all be present and fairly regulated.

Do not accept one-sided conditions. Negotiate, if necessary consult a lawyer. A fair contract is the basis for a long-term, successful partnership.

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