Entry and outsourcing

Outsourcing from a labour law perspective

With outsourcing, you transfer activities, sometimes including staff, to a third party. That touches on contracts, liability, the works council and possibly a transfer of undertaking.

We analyse before signing which staff risks and costs are at stake.

Insourcing: bringing work back in-house

Insourcing means work returns to in-house management. External staff, freelancers or hired-in teams sometimes need to be requalified or taken over.

We guide the transfer, dismissal at the outgoing provider, and new contracts.

Transfer of undertaking

Outsourcing can trigger a transfer of undertaking: employees transfer automatically by operation of law, retaining their rights. Whether that applies depends on the facts; there is no standard answer.

We work together with corporate and HR colleagues in transaction teams.

Works council and employee participation

Outsourcing can trigger the works council's right to advise or consent. Mistakes in procedure block implementation or lead to damages claims.

We determine which works council steps are needed and prepare the documentation.

Contracts with the provider

Service level agreements, liability, staff guarantees and exit clauses determine what happens if the provider goes bankrupt or the contract ends. We review and negotiate them.

Freelancers, contracts for services and sham self-employment

Outsourcing through freelancers carries the risk of requalification as an employment contract. We review contracts for services and model agreements.

Collective redundancy and reorganisation

Outsourcing often comes with a round of redundancies. The Collective Redundancy (Notification) Act, the social plan and individual processes need to align.

See reorganisations and dismissal.

International outsourcing

Nearshoring and offshoring add applicable law, data protection and foreign labour law to the mix. We coordinate with foreign counsel where needed.

Bringing services back and exit

At the end of an outsourcing contract: who takes over the staff, what knowledge returns in-house, and what about competition? Exit clauses deserve careful legal attention.

Data, IP and staff

Outsourcing touches on GDPR, intellectual property and access to systems. We align the contract with staff and privacy aspects.

Joint ventures and shared services

Shared service centres and joint ventures combine elements of insourcing and outsourcing. We assess governance and the labour-law consequences.

Provider bankruptcy

If the outsourced party goes bankrupt, work must quickly return in-house or staff must be taken over. We advise on the transfer and continuity.

Benchmarking and the business case

Before outsourcing, we sometimes help with a legal risk inventory alongside the business case, so decision-making is realistic.

Our practice in real life

Management and HR call us for planned outsourcing, works council resistance, or a dispute with a provider over staff; we deliver a roadmap and documents.

A practical first step

Planning insourcing or outsourcing, a works council question, or a dispute with a provider? Get in touch via contact or call +31 10 249 24 44.

The employer perspective on entry and outsourcing

As an employer, you want predictable costs, manageable risks and documentation that holds up under inspection or in a dispute. We translate insourcing and outsourcing into concrete steps for HR, management and supervisors, with templates where that helps.

That prevents ad hoc decisions that are later challenged or lead to unnecessary proceedings.

The employee perspective on entry and outsourcing

As an employee, you want to know what you are entitled to and which steps make sense before you sign or start proceedings. We review documents, negotiate terms and guide proceedings when necessary.

Executives, professionals and skilled workers value our direct line and clear explanations, including in English.

Documentation and evidence

In insourcing and outsourcing matters, email, minutes, contracts and arrangements all count, not just formal letters. We take stock of what the parties actually agreed and what burden of proof applies in negotiation or proceedings.

Strong documentation strengthens your position early in the process.

Works council, trade union and CAO

Collective rules via the works council, a trade union or CAO law can shape insourcing and outsourcing. We determine which procedures are mandatory and prepare advice requests or consent processes.

Mistakes in employee participation make decisions vulnerable to challenge later.

Negotiating vs litigating

Not every dispute around insourcing and outsourcing has to go to court. Mediation or targeted negotiation can be faster and cheaper; we give you honest advice on which route fits your goal and the relationships involved.

If proceedings are needed, we build a file that holds up before the subdistrict court or the UWV.

International and group context

International groups, holding structures and expats add secondment clauses, foreign entities and English-language contracts to the mix. We review insourcing and outsourcing in a group context and coordinate with foreign counsel where needed.

Due diligence and transactions

In an acquisition, merger or reorganisation, insourcing and outsourcing play a role in due diligence: which claims, which contracts and which staff risks come along? We flag issues early so the purchase price and warranties are correct.

Current developments and case law

Insourcing and outsourcing follow new legislation and case law. We keep advice and templates up to date with the current line, so you don't rely on outdated strategies that no longer hold up in 2026.

Working with HR and advisers

HR, payroll, tax advisers, occupational health services and company doctors are often involved in insourcing and outsourcing matters. We coordinate legal steps with your internal team and external advisers, one consistent line, no conflicting advice.

First step in entry or outsourcing

Do you have a specific question about insourcing or outsourcing? Get in touch via contact or call +31 10 249 24 44. We discuss scope and planning transparently before we start, often the same working day if the matter is urgent.

See also transfer of undertaking and Reorganisations for the broader framework.

Practical checklist for entry and outsourcing

For insourcing and outsourcing matters, we start with facts, goal and deadlines. We take stock of documents, talk to HR or management, and set out a first route during the intake, whether negotiation, proceedings or compliance steps.

That way you know exactly what is on your plate for the coming week.

Fees and planning

We discuss scope and fees in advance. For insourcing and outsourcing matters we often work on a project basis or hourly rate, transparent, with no surprises on the invoice afterwards.

Sørensen Advocaten in practice

Our practice shows that clients mainly seek help with concrete conflicts and looming deadlines. We combine speed with careful documentation, built on years of experience in labour and corporate law.

Sørensen Advocaten and entry and outsourcing

For insourcing and outsourcing matters, employers, HR and professionals bring us in for fast review, documents and negotiation. We work from Rotterdam for clients across the Netherlands, with fixed points of contact and short lines of communication. Get in touch via contact or call +31 10 249 24 44 if you have a specific question.

Outsourcing and the CAO

Outsourcing sometimes touches on the CAO and agency-worker pay. We check whether outsourced work stays within sector-wide rules.

When do you need a lawyer?

For planned insourcing or outsourcing, a works council procedure, a transfer of undertaking, a round of redundancies, or a dispute with a provider over staff.

Our approach

A labour-law analysis before signing, connected to the works council, dismissal and transfer of undertaking where relevant.