05/03/2019 (Agence Europe) – Michael Detjen (S&D, Germany) asked in a written question to the European Commission last week about the application of the provisions of Form A1 (which proves a worker's affiliation to a national social security) in the event of a business trip to visit other trading partners. The MEP also wondered whether there are guidelines establishing criteria to differentiate between business travel and the posting of workers. The Member hopes to receive a reply from the...