Why did ZUS refuse to issue an A1 form? The most common reasons for refusal

Why is the A1 so important? The A1 certificate is a key document. It confirms that the self-employed or posted employee remains covered by the Polish social security system, despite working in France, Switzerland, or another EU/EFTA country. This avoids double-payment of contributions and maintains continuity of insurance. In practice, however, entrepreneurs increasingly ask: "Why did ZUS refuse to issue an A1?" The reasons […]
ZUS A1 refusal – consequences for self-employed people working abroad

Why is the A1 certificate crucial? The A1 certificate confirms that the self-employed person remains covered by the Polish social security system despite providing services in France or Switzerland. This avoids double-payment of contributions and maintains continuity of insurance. However, the lack of this document immediately raises questions: what are the risks without an A1 in France? and what are the consequences of not having an A1 in Switzerland? The scenario […]
Employer's obligations when posting an employee to Belgium

Posting workers to Belgium is an increasingly common practice within the European Union. It allows companies to temporarily send their employees abroad. However, it's important to remember that this entire process requires numerous formalities and compliance with Belgian and EU law. Companies must remember that the key here is, above all, the legality of […]
Notification of employees to Belgium

Posting employees to Belgium is an increasingly common practice among companies operating in the European market. How does it work? A company from one European Union or European Economic Area country temporarily sends its employees to work in Belgium. This process, of course, requires meeting numerous legal and formal requirements to ensure the legality and security of […]
Droit de Retrait in France – Legal basis, examples and tips for contractors

Occupational safety is one of the key responsibilities of every employer. In France, employees have the right to withdraw from work if conditions pose a serious and immediate threat to life or health. This is known as the droit de retrait. Legal basis: This right stems from the Labor Code, specifically Article L4131-1 of the Labor Code, which provides for […]
Employer's obligations when posting an employee to Switzerland

Anyone planning to post workers abroad should be aware that this involves numerous formal and legal obligations, which vary depending on the destination country. Although Switzerland is not a member of the European Union, it remains one of the most formalized labor markets in Europe. Employers posting workers there must meet a number of conditions that guarantee compliance […]
Posting workers to Belgium – ConstruBadge, LIMOSA and employment costs 2025

Are you planning to second your employees to Belgium? Before you begin your project, it's worth understanding your key obligations. In this article, we explain step-by-step the secondment process, what the ConstruBadge card is, and what the current wage rates are in the construction sector. You'll also find a practical table of employee costs in 2025. Under what conditions can employees be seconded […]
Notification of employees to Switzerland

When working with subcontractors or self-employed individuals, Swiss law requires verification of their status. Why is this necessary? Regulatory authorities carefully examine whether self-employment is not bogus and whether the individual is truly acting independently. If they are deemed "falsely self-employed," not only the individual but also the contracting company is liable. The same applies to cases where […]
France: New regulations on protecting workers from heat from July 1. This also applies to posted workers.

New regulations on protecting workers from heat – Decree No. 2025-482 and the Regulation of May 27, 2025. New regulations aimed at increasing worker protection from the hazards of working in high temperatures will come into force on July 1, 2025. These regulations were introduced by Decree No. 2025-482 of May 27, 2025 and […]
German inspections – what documents do you need in case of a Zollkontrolle raid?

If you operate a business in Germany and post employees there or provide services as a self-employed person, you should be aware that the German customs office, Zoll, regularly conducts unannounced inspections. These visits, known as Zollkontrolle, can occur without prior notice—even during work. Therefore, it's worth checking in advance what documents you need to […]