Temporary Staffing (Zeitarbeit) – Definition, Legal Framework & HR Tips

Temporary staffing (German: Zeitarbeit, also known as Leiharbeit or Arbeitnehmerüberlassung) is a form of employment in which companies borrow workers from a staffing agency on a fixed-term basis to cover workforce needs flexibly. Germany's Temporary Employment Act (Arbeitnehmerüberlassungsgesetz, AÜG) governs the legal framework — including a maximum assignment period of 18 months and an equal pay principle that applies after 9 months of deployment. For HR professionals, a solid understanding of these rules is essential to act in a legally compliant and cost-efficient manner.

What Is Temporary Staffing? Definition and Distinctions

Temporary staffing involves three parties: the staffing agency (Verleiher / lender), the client company (Entleiher / hirer), and the temporary worker. The staffing agency concludes the employment contract with the worker and is therefore the legal employer — but it assigns the worker to the client company, which directs and manages their day-to-day work.

The term Zeitarbeit is a modern industry-facing term; the legally precise term under German law is Arbeitnehmerüberlassung (temporary agency work), governed by the AÜG. The widely used synonym Leiharbeit (literally: "borrowed labour") refers to the same concept.

Zeitarbeit, Leiharbeit, Arbeitnehmerüberlassung — Are They All the Same?

Yes. All three terms describe the same form of employment. Zeitarbeit is preferred by staffing agencies and in public discourse, while Arbeitnehmerüberlassung is the legal term used in legislation and court rulings.

Distinction from Service Contracts and Direct Recruitment

Temporary staffing must be clearly distinguished from a service contract (Werkvertrag): under a service contract, the contractor is obligated to deliver a specific result (e.g. developing software), and the contracted personnel are not subject to the client's authority to give instructions. In temporary staffing, by contrast, the assigned workers are integrated into the client company's operations and follow its directions.

Direct recruitment differs fundamentally: here, a recruitment agency searches for suitable candidates for a permanent position. The employment relationship is established directly between the worker and the hiring company — without the triangular relationship that characterises temporary staffing.

Legal Framework: The Temporary Employment Act (AÜG)

The Arbeitnehmerüberlassungsgesetz (AÜG) forms the legal foundation for all temporary staffing activities in Germany. It protects both temporary workers and client companies from legal uncertainty.

Licensing Requirement for Staffing Agencies

Any party wishing to place workers with third companies on a commercial basis must hold a licence from the Federal Employment Agency (Bundesagentur für Arbeit) (§1 AÜG). Staffing agencies operating without a valid licence are acting illegally — and the client company may also be held liable in such cases. As a hiring company, you should therefore always verify that the staffing agency holds a valid assignment licence before entering into any arrangement.

Maximum Assignment Period: 18 Months

Under §1 para. 1b AÜG, a temporary worker may be assigned to the same client company for a maximum of 18 consecutive months. After this, a break of at least three months must be observed before a new assignment to the same client may begin. Exceptions apply where collective agreements in the client company's sector provide for different rules.

If you exceed this limit as a client company, you risk the creation of a regular employment relationship by operation of law — with all associated rights and obligations.

Equal Pay: Same Wages After 9 Months

After 9 months of uninterrupted assignment to the same client company, the temporary worker is entitled under §8 AÜG to the same remuneration as a comparable permanent employee at the client. This principle is known as equal pay.

Important: sector-specific supplementary collective agreements (Branchenzuschlagstarifverträge) can shift the point at which equal pay becomes applicable. For HR professionals, meticulous documentation of assignment durations is indispensable in order to calculate and demonstrate equal pay entitlements correctly.

Obligations of the Client Company

As a client company, you bear a number of obligations towards temporary workers:

• Employee protection: regulations on working hours, rest periods and occupational safety apply equally to temporary workers.
• Duty to inform: you must notify temporary workers of open positions within the company (§13a AÜG).
• Equal access to shared facilities: temporary workers are entitled to use the canteen, childcare facilities, sports amenities and other company facilities on the same basis as permanent staff (§13b AÜG).
• Compliance with the maximum assignment period: document assignment durations carefully.

Temporary Staffing from a Business Perspective

Advantages for Employers

Temporary staffing offers companies genuine flexibility: you can respond quickly to peaks in demand without making long-term staffing commitments. The key advantages include:

• Short-notice availability: staffing agencies can often provide personnel within a matter of days.
• Reduced risk: the employment relationship lies with the staffing agency — you bear no unfair dismissal risk.
• "Try & Hire" option: you can assess temporary workers during their assignment and hire them directly if they prove a good fit.
• Lower recruitment burden: pre-selection and administrative handling is managed by the staffing agency.

Disadvantages and Risks

Temporary staffing also has clear downsides that you should factor in realistically:

• Higher overall cost: the agency margin often makes temporary staffing more expensive than direct hiring.
• Lower loyalty: temporary workers frequently identify less strongly with the client company.
• Onboarding effort: every new person takes time to become fully productive — even on short assignments.
• Compliance risks: violations of the AÜG (e.g. agency lacks a valid licence, maximum assignment period exceeded) can be costly.

Costs: When Does Temporary Staffing Pay Off?

Temporary staffing is most worthwhile when the staffing need is short-term, time-limited or difficult to plan — for example in production during order peaks, in logistics, or to cover parental leave absences. For ongoing, permanent staffing needs, direct hiring is generally more cost-effective and strategically sound.

Practical Guidance for HR Professionals

Checklist: What to Consider as a Client Company

Before deploying temporary workers, check the following points:

• Verify the staffing agency's licence with the Federal Employment Agency
• Conclude a written temporary agency work agreement (§12 AÜG)
• Document and monitor assignment duration and the equal pay deadline
• Ensure compliance with employee protection regulations (working hours, health & safety)
• Inform temporary workers of open positions
• Ensure access to shared company facilities

Quality Assurance: How to Find Suitable Temporary Workers

An often underestimated aspect of temporary staffing is the quality of the match: who is genuinely suited to the role — both professionally and personally? Staffing agencies handle the initial pre-selection, but the final assessment lies with the client company.

Organisations that want to ensure a rigorous suitability assessment even under time pressure can turn to digital aptitude diagnostics. The Aivy platform offers scientifically validated assessments that allow candidates to be evaluated quickly and objectively for role fit — even when hiring decisions need to be made at short notice.

Frequently Asked Questions About Temporary Staffing

What Is the Difference Between Zeitarbeit and Leiharbeit?

Both terms are synonyms and refer to the same thing: the commercial assignment of workers to third-party companies. Zeitarbeit is the common term used in the industry and public discourse, while Leiharbeit is a colloquial synonym. The legally precise term under German law is Arbeitnehmerüberlassung.

How Long Can Temporary Workers Be Deployed?

The statutory maximum assignment period is 18 months per temporary worker at the same client company (§1 para. 1b AÜG). Collective agreements may provide for different rules. Once the maximum period has been reached, a break of at least three months must be observed before a new assignment may begin.

When Does Equal Pay Apply in Temporary Staffing?

After 9 months of uninterrupted assignment to the same client company, the equal pay principle under §8 AÜG applies: the temporary worker is then entitled to the same remuneration as a comparable permanent employee. Sector-specific supplementary collective agreements can shift this point in time.

What Are the Main Advantages of Temporary Staffing for Companies?

The key advantages are short-notice workforce availability, reduced employment risk, the "Try & Hire" option, and lower recruitment overhead. Temporary staffing is particularly well-suited to fluctuating or seasonal staffing needs.

What Are the Main Disadvantages and Risks?

Temporary staffing is typically more expensive than direct hiring. Additional drawbacks include lower employee loyalty, onboarding effort, and compliance risks if the AÜG is not properly observed (e.g. agency lacks a valid licence, maximum assignment period exceeded).

Does a Staffing Agency Need a Licence?

Yes. Staffing agencies require a licence from the Federal Employment Agency (§1 AÜG). As a client company, you should always verify this before entering into any arrangement. If you work with an unlicensed agency, you may become personally liable.

What Are the Obligations of the Client Company?

As a client company, you are required to inform temporary workers of open positions, grant them access to shared facilities, and comply with all applicable employee protection regulations. You must also carefully document and adhere to the maximum assignment period and equal pay deadlines.

How Does Temporary Staffing Differ from a Service Contract?

Under a service contract, the contractor is obligated to deliver a specific result and is not subject to the client's authority to direct their work. In temporary staffing, by contrast, the worker is integrated into the client's operations and follows their instructions. This distinction matters: if a service contract is in practice operated like a temporary staffing arrangement, this is known as concealed temporary agency work (verdeckte Arbeitnehmerüberlassung) — and can have serious legal consequences.

Conclusion

Temporary staffing is a flexible and widely used HR instrument that, when deployed correctly, delivers real value for organisations. As an HR professional, you should have a firm grasp of the legal framework — particularly the maximum assignment period, equal pay rules and the agency's licensing requirement — in order to avoid compliance risks.

It is equally important to deploy temporary staffing strategically: as a tool for short-term or unpredictable workforce needs — not as a permanent solution for core positions. Investing in a sound suitability assessment improves matching quality and reduces onboarding costs in the long run.

Would you like to integrate objective aptitude diagnostics into your recruitment process? Find out how the Aivy platform supports HR teams in making fast, fair hiring decisions.

Sources

• Arbeitnehmerüberlassungsgesetz (AÜG) [Temporary Employment Act]. Federal Ministry of Justice, 2022. https://www.gesetze-im-internet.de/a_g/
• Temporary Staffing Statistics – Employment Data. Federal Employment Agency (Bundesagentur für Arbeit), 2024. https://statistik.arbeitsagentur.de
• Temporary Agency Work – Information Page. Federal Ministry of Labour and Social Affairs (BMAS), 2024. https://www.bmas.de/DE/Arbeit/Arbeitsrecht/Arbeitnehmerueberlassung/arbeitnehmerueberlassung.html
• BAP Labour Market Report on Temporary Staffing. Federal Employers' Association of Personnel Service Providers (BAP), 2023. https://www.bap.de
• iGZ Statistics on Temporary Staffing in Germany. Association of Temporary Staffing (iGZ), 2023. https://www.igz.de