The portable form A1 is an essential document for those working in several EU Member States. It certifies the applicable social security legislation and avoids double payment of social contributions. Here is everything you need to know about this important document.
What is Form A1?
The portable form A1 (formerly E101) is a certificate attesting to the social security legislation applicable to a person who carries out activities in two or more EU/EEA Member States. This document confirms that the person concerned pays social security contributions in a single Member State and is exempt from paying them in the other states where he or she is temporarily working.
Who Needs Form A1?
Form A1 is required in the following situations:
- Workers temporarily posted to another EU/EEA Member State
- Persons working simultaneously in two or more Member States
- Crew members in international transport (aviation, road transport, maritime)
- Freelancers providing services in several EU countries
Why is Form A1 Important?
Form A1 brings essential benefits to both employees and employers:
- Avoids double payment of social contributions in several countries
- Ensures continuity of social protection
- Confirms compliance with European social security legislation
- Protects against employment sanctions undeclared
- Facilitates worker mobility in the EU/EEA
- Provides legal security to both the employer and the employee
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