Posted Workers Directive: Cross-Border Employment Rules

Quick Answer: What Is the Posted Workers Directive?

The Revised Posted Workers Directive (Directive (EU) 2018/957), amending the original Directive 96/71/EC, governs the employment conditions of workers temporarily sent by their employer to work in another EU member state. It established the principle of equal pay for equal work in the same place.

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Who Is a Posted Worker?

A posted worker is an employee who is sent by their employer to carry out work in another EU member state on a temporary basis. The employment relationship remains with the sending employer in the home country. Three categories of posting exist under Article 1 of Directive 96/71/EC:

1. Posting under a contract for services: An employer posts a worker to another member state to fulfil a contract with a client in that state (e.g., a German IT company sends developers to a French client)
2. Intra-group posting: A company posts a worker to an establishment or subsidiary within the same group in another member state
3. Posting through a temporary work agency: A temporary employment agency posts a worker to a user undertaking in another member state

The worker must be habitually employed in the home country. A company cannot recruit workers solely for the purpose of posting them abroad.

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Equal Pay: The Core Principle

From Minimum Rates to Equal Pay

The original 1996 directive only required posted workers to receive the minimum rate of pay in the host country. The 2018 revision replaced this with remuneration -- a much broader concept meaning posted workers must receive the same pay as local workers doing the same job.

Article 3(1) of the revised directive specifies that "remuneration" includes all the elements of pay that are mandatory under national law, regulations, administrative provisions, collective agreements, or arbitration awards that have been declared universally applicable in the host member state.

This includes:

• Basic pay and minimum wage
• Overtime rates
• Allowances (shift, hardship, hazardous work)
• Bonuses directly linked to the posting
• Payments in kind

It does not include: supplementary occupational retirement pension schemes, allowances for travel/board/lodging expenses (which must be reimbursed separately).

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Maximum Posting Duration: 12 + 6 Months

The Standard Period

Article 3(1a) establishes that when the effective duration of posting exceeds 12 months, the posted worker becomes entitled to all applicable terms and conditions of employment in the host member state (not just the core list), with the exception of:

• Procedures, formalities, and conditions for the conclusion and termination of the employment contract
• Supplementary occupational retirement pension schemes

The 6-Month Extension

The posting employer may submit a motivated notification to the host-country authority to extend the 12-month period to 18 months. No approval is required -- the notification itself triggers the extension.

Anti-Circumvention

Article 3(1a) also includes an anti-circumvention provision: when an employer replaces a posted worker with another posted worker performing the same task at the same place, the durations of posting are added together for the purpose of calculating the 12/18-month threshold.

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Mandatory Host-Country Terms

Core Terms (From Day One)

From the first day of posting, the host member state must guarantee posted workers the following terms as applicable in its territory:

Extended Terms (After 12/18 Months)

After the posting exceeds 12 months (or 18 with notification), the posted worker is entitled to all applicable terms and conditions of employment in the host state, except employment contract termination procedures and supplementary pensions.

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The A1 Certificate

What Is an A1 Certificate?

The A1 Portable Document (formally the E101 replacement under Regulation (EC) 883/2004) certifies which country's social security legislation applies to a worker. For posted workers, it confirms that the worker remains insured under the home country's social security system during the posting.

Why It Matters

• The A1 certificate prevents double social security contributions (in both home and host countries)
• It is legally binding on the host-country institutions -- the ECJ ruled in A-Rosa Flussschiff (C-620/15) and Altun (C-359/16) that host countries must accept a valid A1 certificate, though they can request its withdrawal if obtained by fraud
• It must be carried by the worker and produced on request to labour inspectors

How to Obtain It

The employer or self-employed person applies to the competent social security institution in the home country. Requirements:

• The employer must have substantial activity in the home country (not merely internal administration)
• The worker must have been subject to the home country's social security for at least 1 month before posting (though this is a guideline, not a hard rule)
• The posting must be genuinely temporary (maximum 24 months under social security rules, distinct from the employment law 12+6 month limit)

Country-Specific Institutions

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Notification Obligations

Prior Declaration to the Host Country

Most EU member states require the posting employer to submit a prior notification (declaration of posting) to the host country's competent authority before the posting begins. The information typically required:

• Employer identification (name, address, registration number)
• Worker details (name, date of birth, nationality, social security number)
• Host-country client details
• Duration of posting and work location
• Nature of the services
• Contact person or liaison officer in the host country

Country-Specific Portals

Designated Liaison Officer

The Enforcement Directive (2014/67/EU) allows host countries to require the posting employer to designate a contact person in the host country who can liaise with the competent authorities, send and receive documents, and act as a point of contact for social partner negotiations.

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Enforcement: Directive 2014/67/EU

The Enforcement Directive supplements the Posted Workers Directive with practical mechanisms:

Administrative Requirements and Control Measures

Host countries may require:

• A copy of the employment contract (or equivalent)
• Payslips for the posting period
• Time sheets showing start, end, and duration of daily working time
• Proof of wage payments
• A1 certificate

Administrative Penalties and Cross-Border Enforcement

• Host countries can impose administrative penalties on posting employers that violate local working conditions
• Cross-border enforcement of fines: Directive 2014/67/EU establishes a mechanism for the recovery of administrative fines across borders. If a penalty is imposed in the host country but the employer is established in another member state, the fine can be enforced in the home country.

Subcontracting Chain Liability

Article 12 allows (but does not require) member states to hold the direct contractor liable for the posted workers of its subcontractors. Several countries have implemented this:

• France: The "donneur d'ordre" can be jointly liable for subcontractor wage obligations
• Germany: Chain liability in the construction sector under the Posted Workers Act (AEntG)
• Belgium: Joint and several liability for wages in construction
• Netherlands: Chain liability (ketenaansprakelijkheid) for wages under the Wages and Salaries Tax Act

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Practical Compliance Steps

Before the Posting

1. Obtain an A1 certificate from the home country social security institution
2. Submit the prior notification to the host country authority via the relevant portal
3. Research host-country terms: minimum wage (including sector rates from universally applicable collective agreements), working time rules, annual leave entitlement, health and safety requirements
4. Calculate remuneration: Ensure the posted worker will receive at least the same pay as a comparable local worker
5. Prepare documentation: Employment contract, assignment letter, payslips, working time records
6. Appoint a liaison officer in the host country if required

During the Posting

7. Apply host-country working conditions from day one (minimum wage, working time, leave, health and safety)
8. Maintain records in the host country (contract, payslips, time records) for the duration and for a period after
9. Track duration carefully -- notify the host country authority if the posting will exceed 12 months and you want to use the 6-month extension
10. Apply full host-country terms if the posting exceeds 12/18 months (except contract termination and supplementary pensions)

After the Posting

11. Retain documentation for the period required by both home and host country law (typically 2-5 years)
12. Close out the A1 certificate (ensure social security is correctly transferred back to the home country system)

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How Grove HR Supports Posted Worker Compliance

Grove HR helps employers manage cross-border postings:

• A1 certificate tracking with reminders for expiration and renewal
• Host-country working conditions pre-configured for major EU member states
• Duration tracking with automatic alerts at the 12-month and 18-month thresholds
• Remuneration comparison tools to ensure posted workers receive equal pay
• Document management for posting notifications, employment contracts, and payslips
• Multi-country payroll integration handling dual reporting requirements