Under Section 12 of Germany's Temporary Employment Act (Arbeitnehmerüberlassungsgesetz, AÜG), a staffing agreement between an agency and a client must be in text form and must state whether the agency holds a valid licence, plus the client's description of the role, the required qualification, and the essential working conditions – including pay – of a comparable employee. Miss one of these, and the agency risks fines of up to €500,000 and, in the worst case, an employment relationship that snaps into existence automatically between the worker and the client. This article is not a downloadable template; it is a full checklist of mandatory content you can use to audit any staffing agreement someone hands you in a few minutes. It covers only the agreement itself – the legal triangle behind German staffing (agency, client, worker) and how it differs from a service or works contract is covered in the companion piece the legal structure of German employee leasing; the licensing procedure itself is not.
What must a German staffing agreement legally contain?
Section 12 AÜG governs the relationship between the agency (Verleiher) and the client (Entleiher), and two more mandatory items sit in Section 1 AÜG, tied directly to the contract itself. For a walkthrough of the whole statute, see the companion article the AÜG explained. The table below lists every mandatory item and what breaks if it is missing.
| Mandatory content | Legal basis | Why it is required | What goes wrong if it's missing |
|---|---|---|---|
| Text form for the entire agreement | Section 12(1) sentence 1 AÜG | The contract must exist in text form – an email or a PDF is enough, a handwritten signature is not required | Without text form there is no proof; in a customs audit the agency carries the burden of proving what was actually agreed |
| Explicit labelling as "employee leasing" | Section 1(1) sentence 5 AÜG | Agency and client must explicitly call the arrangement employee leasing in the contract before the assignment starts | A regulatory fine of up to €30,000 (Section 16(1) no. 1c AÜG); the employment contract between agency and worker becomes void (Section 9(1) no. 1a AÜG) – which automatically creates an employment relationship with the client (Section 10(1) AÜG) |
| Identifying the specific worker before the assignment starts | Section 1(1) sentence 6 AÜG | The contract must name the actual person being placed, referencing itself, before the assignment begins – an anonymous framework agreement is not enough once the work starts | Same fine (up to €30,000, Section 16(1) no. 1d AÜG) plus the same voidness and take-over risk as above |
| Agency's statement on whether it holds a licence under Section 1 AÜG | Section 12(1) sentence 3 AÜG | The client needs to know whether its counterpart is even allowed to lease staff | If the agency genuinely lacks a licence, the entire staffing agreement is void (Section 9(1) no. 1 AÜG) and a regulatory fine applies (Section 16(1) no. 1 AÜG) |
| Client's description of the role and required qualification | Section 12(1) sentence 4 AÜG | The client must describe what the role involves and what qualification it needs | Without it, there is no basis for identifying the "comparable role" needed for the equal-pay comparison – leaving the agency unable to prove its case in a dispute |
| Essential working conditions, including pay, of a comparable employee | Section 12(1) sentence 4 in conjunction with Section 8 AÜG | This is the basis of the equal-pay principle; partly waived where a collective agreement under Section 8(2) or (4) AÜG applies | An equal-pay breach carries the single largest fine in the entire statute: up to €500,000 (Section 16(1) no. 7a, (2) AÜG) |
| Prompt notice if the agency's licence lapses | Section 12(2) sentence 1 AÜG | The agency must inform the client the moment its licence ends | Without notice, the client keeps deploying leased workers without a valid licence in the background – and risks its own fine (Section 16(1) no. 1a AÜG) |
| Notice on the wind-down deadline after non-renewal, revocation or withdrawal | Section 12(2) sentence 2 AÜG | Fixes how long running assignments may still legally continue after the licence is not renewed, withdrawn or revoked | Without it, assignments keep running past the legal wind-down deadline – leasing without a valid licence |
Source and date: Arbeitnehmerüberlassungsgesetz (AÜG), Sections 1, 8, 9, 10, 12, 16, retrieved via gesetze-im-internet.de on September 11, 2026.
Which clauses show up in practice beyond the legal minimum?
The statute says nothing about the rate you charge, where the person works, or your notice period – yet these are exactly the points that decide whether an agreement holds up in a dispute. This second table shows where the law stops and practice takes over.
| Clause | Mandatory or customary | Why it belongs in the contract | What goes wrong without it |
|---|---|---|---|
| Bill rate and rate-adjustment mechanism | customary, not legally required | Section 12 AÜG says nothing about price – the bill rate is a matter of negotiation | Without an adjustment clause, the agency absorbs every collective-bargaining or minimum-wage increase alone, since it must pay the higher wage under Section 8(5) AÜG regardless of what the client contract says; the cost math behind this is covered in staffing agency cost and pricing models |
| Work location and host site | customary, effectively forced by the role description | Without a location, neither the equal-pay comparison group nor who is responsible for workplace safety can be pinned down | Disputes over whose site rules apply, and unclear accident liability if something goes wrong |
| Right to direct the work (day-to-day at the client, disciplinary at the agency) | customary, mirrors a mandatory statutory feature | Being subject to someone else's instructions is what defines employee leasing in the first place, per Section 1(1) sentence 2 AÜG | If actual practice drifts from the contract text, Section 12(1) sentence 2 AÜG says actual practice governs – the first step toward disguised employee leasing |
| Client's workplace-safety obligations | legally binding regardless (Section 11(6) AÜG), customary to repeat in the contract | The client must brief the worker on hazards and safety measures before the assignment starts – independent of the contract | Without the clause, this duty is often overlooked in practice; after an accident, there is no written proof the briefing happened |
| Liability allocation between agency and client | customary, Section 12 AÜG is silent on it | For damage a leased worker causes on the client's premises, only general civil-code rules apply otherwise | Without a clause, liability is unclear after an incident – an expensive dispute instead of a settled rule |
| Take-over or placement fee for permanent hires | partly mandatory by way of a cap | Section 9(1) no. 3 AÜG only permits a "reasonable" fee paid by the client to the agency | A clause that simply bans the hire is void (Section 9(1) no. 3 AÜG); a clause that instead makes the worker pay is also void (Section 9(1) no. 5 AÜG) |
| Term and termination tied to the maximum assignment duration | customary, must track the statutory ceiling | The 18-consecutive-month maximum assignment duration (Section 1(1b) AÜG) applies regardless of the contract's own term | Without that link, an assignment can run past the ceiling – voiding the worker's employment contract with the agency (Section 9(1) no. 1b AÜG) and automatically making the client the employer (Section 10(1) AÜG) |
| Confidentiality and handling of personal data | customary, a GDPR obligation independent of the AÜG | Agency and client inevitably exchange the worker's personal data | Without a clause, there is no documented basis for that data exchange between the two parties |
What actually happens when a mandatory item is missing?
Two consequences outweigh any fine. First: if the explicit "employee leasing" label or the named worker is missing, Section 9(1) no. 1a AÜG voids the employment contract between agency and worker – and Section 10(1) AÜG then creates an employment relationship between client and worker automatically, backdated to the planned start of the assignment. The client becomes an employer it never intended to be, with full obligations and a pay claim at least matching the originally agreed rate. The only way out is if the worker personally declares, in writing and within one month, that they want to stay with the agency (a "Festhaltenserklärung" under Section 9(2) AÜG) – which requires an in-person appearance at the employment agency. Second: if the licence statement is missing and the agency genuinely has no licence, the staffing agreement between agency and client is itself void (Section 9(1) no. 1 AÜG). In parallel, Section 16 AÜG treats each formal breach as a separate regulatory offence, with fines ranging from €1,000 for minor documentation lapses up to €500,000 for an equal-pay violation. This article explains the legal position and does not replace individual legal advice.
Where do staffing agencies actually get tripped up?
Contract wording and actual practice diverge. Label the arrangement a "services contract" on paper, then integrate the worker into the client's organisation and have the client direct their daily work, and Section 12(1) sentence 2 AÜG says actual practice governs – the contract's title offers no protection against later being reclassified as disguised employee leasing.
The collective-bargaining exception to equal pay gets treated as a blank check. A collective agreement under Section 8(2) AÜG can deviate from equal pay, but not indefinitely: by the 15th month of an assignment at the latest, pay must reach a level the agreement itself defines as equivalent to comparable workers in the client's industry, phased in gradually starting after a six-week onboarding period (Section 8(4) AÜG).
The 18-month ceiling gets counted per contract instead of per person. If the same worker moves to a different agency after a short break but returns to the same client, the time counts cumulatively as long as the gap between assignments is three months or less (Section 1(1b) sentence 2 AÜG) – switching providers does not reset the clock.
The staffing agreement gets confused with the worker's employment contract. Section 12 AÜG governs the relationship between agency and client; the worker's own pay, notice period and other terms sit in a separate employment contract between agency and worker, which also has to satisfy the Nachweisgesetz plus AÜG-specific additions under Section 11(1) AÜG. Mixing both documents into one is how mandatory items end up in the wrong place – or missing entirely.
Frequently asked questions about German staffing agreements
Does a German staffing agreement need a handwritten signature?
No. Section 12(1) sentence 1 AÜG only requires text form – an email or a PDF with a clear sender is enough, and a handwritten signature is not needed. What matters is that the contract's content matches actual practice: if the two diverge, the law treats actual practice as controlling for how the arrangement is classified.
What happens if the licence statement is missing from the contract?
If the agency's statement on whether it holds a licence under Section 1 AÜG is missing, the contract breaches Section 12(1) sentence 3 AÜG. If the agency genuinely has no licence, the entire staffing agreement is void under Section 9(1) no. 1 AÜG, and a fine under Section 16 AÜG applies on top.
Does the contract have to name the specific worker being placed?
Yes, before the assignment starts. Section 1(1) sentence 6 AÜG requires the contract to identify the actual worker by referencing itself. Without that, the worker's employment contract with the agency can become void under Section 9(1) no. 1a AÜG – automatically creating an employment relationship with the client instead.
Can the client contractually rule out hiring the worker permanently later?
No. A clause that bans the client from later hiring the worker directly is void under Section 9(1) no. 3 AÜG. What is allowed instead is a reasonable fee the client pays the agency for the earlier placement – not a payment obligation placed on the worker.
How long can the same worker stay with the same client?
The law does not cap the contract's term, only the assignment of the same worker to the same client, at 18 consecutive months (Section 1(1b) AÜG), which a collective agreement for the client's industry can extend. Earlier assignments count toward that limit if the gap between them is three months or less.
Does the staffing agreement also cover the worker's salary?
No. The worker's pay and other employment terms sit in a separate employment contract between the agency and the worker, not in the staffing agreement between agency and client. That employment contract additionally has to satisfy the Nachweisgesetz with AÜG-specific additions under Section 11(1) AÜG.
Jürgen Ulbrich
Jürgen Ulbrich has more than a decade of experience in developing and leading high-performing teams and companies. As an expert in employee referral programs as well as feedback and performance processes, Jürgen has helped over 100 organizations optimize their talent acquisition and development strategies.
