The "personnel leasing" (temporary agency work) model provides growing companies in European Union (EU) countries with rapid scaling, project-based expertise needs, and flexibility in cross-border operations. However, if this model is misconfigured, it can lead to serious administrative sanctions due to reasons such as replacement of permanent employment, equal pay for equal work violations, prohibitions in high-risk jobs, and lack of licenses/permits. In this article, we address the EU's general framework and the legal limits that vary by country from a practical perspective.
Why are "legal limits" critical? Where does the problem start?
Personnel leasing often appears to be a bilateral "recruitment" process, but it is actually based on a triangular structure: The worker is an employee of the agency that establishes the temporary employment relationship; the worker's actual work takes place at the user company. This triangular structure creates gray risks in areas such as tax-social security, occupational health and safety, working hours, and wage equality.
EU regulations set a "floor standard" to mitigate these risks; however, the critical point is: EU rules are a foundation, not a ceiling. Each member state adds its own duration, rate, sector, and license limits on top of this foundation. Therefore, a configuration that works smoothly in one country may be considered irregular in another.
EU general framework: What does Directive 2008/104/EC say?
The main text regulating temporary employment relationships in the EU is the Temporary Agency Work Directive 2008/104/EC. The directive focuses on two objectives: protecting temporary workers and regulating the sector without completely eliminating flexibility for employers.
1) Equal treatment principle
The backbone of the directive is the equal treatment principle. Accordingly, agency workers must work under conditions that are at least equivalent to the basic working and employment conditions of permanent employees performing the same or similar work at the user company. Equality is particularly targeted in the following areas:
- Wages (base salary, bonus logic, overtime compensation)
- Working hours, overtime, breaks, and rest arrangements
- Night work and holiday/leave rights
- Access to collective facilities (such as cafeteria, transportation, childcare) – equal access unless there is an objective reason
Additionally, the directive adopts a framework approach that supports equal protection in sensitive areas such as the protection of pregnant or breastfeeding workers.
2) Transparency and access: information on vacant positions and prohibition of fees
The user company is obliged to ensure that agency workers are informed about permanent job opportunities (for example, announcements of open positions). Additionally, user companies are prohibited from charging agency workers fees such as placement/recruitment fees.
There is another important safeguard in the directive: contract provisions that prevent the direct hiring of agency workers by the user company are generally considered invalid. This regulation aims to prevent the agency model from becoming a "lock-in" mechanism.
3) Training, occupational health, and safety
Member states should support mechanisms that facilitate agency workers' access to training. In practice, the responsibilities of the agency and the user company may vary according to national law. However, the fundamental approach is clear: Agency workers should be accurately informed about the risks at their workplace.
4) Limited exceptions (derogations)
The directive keeps exceptions to the equal pay principle very narrow. In some countries, there may be variations in wage equality if the agency employs the worker under a permanent employment contract or under certain collective bargaining arrangements. As indicated in research data, such practices may arise under specific conditions in countries like Ireland, Hungary, and Malta; however, the "general level of protection" must be maintained.
The real playing field: Country-based legal limits and differences
The EU directive does not set a uniform "maximum duration" or "percentage quota." Instead, many member countries impose limits of the following types to prevent personnel leasing from becoming a replacement for permanent positions:
- Duration limits: How long the same position can be filled by an agency worker
- Rate/quota limits: No more than a certain percentage of the workforce can be used through the agency
- Job type restrictions: Certain high-risk or strategic jobs cannot be carried out through the agency
- Licenses and qualifications: Conditions for the agency to operate, such as licenses, guarantees, and authorized personnel
Since each of these headings is defined differently at the country level, the risk of non-compliance increases when companies proceed with a "one-size-fits-all contract" across the EU.
Prohibition in high-risk jobs: Common restriction in many countries
Research data emphasize that there are prohibitions or serious restrictions on the use of agency workers in high-risk jobs in countries such as Belgium, Croatia, France, Greece, Poland, Portugal, Slovenia, and Spain. For example:
- Jobs involving exposure to carcinogenic or highly toxic substances, such as asbestos removal
- Work processes that pose radiation risks
- High hazard class chemicals such as fumigants
In practice, this means: Even if the operation is "temporary," if the nature of the work falls under a prohibited/special permit class in national law, the personnel leasing model may not be a suitable tool. Instead, direct employment, subcontracting, project contracts, or EOR/payroll solutions may offer a more compliant framework (this varies by country).
Example of Malta: License, guarantee, and qualified personnel requirements
To see how compliance can "harden" at the country level within the EU, Malta is a current example. Under the Employment Agencies Regulations 2023 (effective from April 2024), agencies providing temporary workers are required to have a license and certain financial/administrative obligations. According to research data, the key elements are as follows:
- €20,000 guarantee requirement
- For more than 20 employees, an additional 2% guarantee based on total annual salary (up to a certain limit)
- Requirement to have a qualified person residing in the EU for HR management
- Annual license fee (with a varying fee structure for initial application and renewal)
Such regulations weaken the approach of "I work with the agency, the responsibility is with the agency." The user company must also check whether the service it procures is licensed and compliant with regulations; otherwise, there is a risk of supply chain non-compliance.
For official framework and updates, you can check FinanceMalta announcements.
Slovenia and application risk: "Compliance on paper" is not enough
Research data indicate that there have been instances of abuse in the model where agencies hire workers and "lease" them to user companies in Slovenia; this can create a more vulnerable situation in terms of job security and working conditions compared to permanent employees. While the directive aims to improve risk information and access to basic rights, real-life outcomes are determined by audit capacity, contract structure, and payroll practices.
Scandinavian exception: Agency workers may earn more in some sectors
Research data also note a "positive anomaly" where agency workers in Scandinavian countries (especially in fields like nursing) can sometimes earn higher wages than permanent employees. This reminds us that the principle of equality in the directive is a "floor," not a "ceiling": National practices and market dynamics can push agency wages higher.
Practical compliance checklist for companies (EU-wide + country differences)
When scaling the personnel leasing model in the EU, focusing solely on the agency contract is not sufficient. The following checklist provides a good starting point for managing country differences:
- Equal treatment: Compare wages, overtime, breaks, leave, night work, and holiday practices with the equivalent role at the user company.
- Access to facilities: Clarify the status of agency workers in facilities such as cafeteria/transportation/childcare; document objective justification if there is an exception.
- Job type suitability: Check country-specific prohibitions in areas such as high-risk jobs/dangerous chemicals/radiation.
- Duration and quota: Verify the maximum duration of agency use in the same position, renewal rules, and rate limits at the country level.
- Licenses and authority: Confirm whether the agency meets obligations regarding licenses/permits, guarantees, and qualified personnel (critical in countries like Malta).
- OHS and training: Clearly outline the responsibilities of the parties in risk assessment, on-the-job training, and provision of personal protective equipment in writing.
- Data protection: Especially check for GDPR compliance and explicit consent in background checks and candidate/employee data.
Working hours, discrimination, and horizontal rules like "48 hours"
While country rules regarding personnel leasing may vary, certain horizontal aspects of labor law are widely applied in the EU. For example, in working time regulations, many countries implement an average weekly limit of 48 hours (with working time directives and national practices). Additionally, the prohibition of discrimination, equal treatment, and basic worker protections are also significant compliance areas for agency workers.
Cost and tax dimension: The seemingly "cheap" model can become expensive
Personnel leasing can create a cost advantage in the short term by reducing payroll and recruitment burdens. However, in a misconfigured setup, total costs can rise rapidly:
- Back pay differences: If lower wages/benefits were applied compared to the equivalent permanent staff, differences can be claimed.
- Administrative fines: Working with an unlicensed agency, using agency workers in prohibited jobs, or informal risks trigger penalties.
- Tax and social security risks: Incorrect model selection in cross-border work arrangements can escalate discussions on social security, withholding, and permanent establishment (PE).
- Operational risk: Indirect costs arise from project halts in case of audits or complaints, such as violations of customer SLAs.
Therefore, the question of "personnel leasing, posted worker model, EOR/payroll, or direct employment?" is a strategic decision that should be answered jointly by HR, tax, legal, and operations.
Corpenza approach: Country-based compliance + mobility + payroll/EOR integration
The main challenge in the personnel leasing model in the EU is managing 27 different national implementations simultaneously, rather than a single directive. Corpenza helps companies progress more predictably in the following areas with a focus on international business development and mobility:
- Country-based compliance analysis: Creating a risk map for areas such as duration/quota, prohibited jobs, equal treatment, and contract structure
- Payroll/EOR alternatives: Designing payroll and employment models that may be more suitable instead of/alongside personnel leasing
- Cross-border workforce planning: Evaluating tax and compliance impacts together in different scenarios, including the posted worker approach
- Operational documentation: Structuring the sets of contracts, job descriptions, wage matching, and OHS documentation needed during audits
Especially for companies growing simultaneously in multiple EU countries, establishing a single umbrella compliance strategy instead of "separate methods in each country" controls costs, reduces the risk of surprise audits, and standardizes employee experience.
Conclusion: Personnel leasing is possible in the EU; but it is not "one-size-fits-all"
EU legislation provides a strong protection framework with the Temporary Agency Work Directive: equal treatment, transparency, access to facilities, and the invalidity of certain types of contract barriers are fundamental to this framework. However, actual compliance is achieved in "local details" due to country-based duration/quota limits, high-risk job prohibitions, and license/guarantee conditions.
If you are planning personnel leasing, focus not only on agency selection but also on country legislation, contract structure, wage matching, and operational evidence. Seeking professional support in this process keeps compliance risks manageable while accelerating growth.
Disclaimer
This content is prepared for general informational purposes; it does not constitute legal, financial, or tax advice. Legislation may vary by country and may be updated over time. We recommend verifying current regulations through official sources and authorized institutions of the relevant country before implementation and seeking support from professionals with expertise in the field. For information on the basic framework at the EU level, you can check the European Commission's Temporary Agency Workers page.
