It may happen that it becomes necessary to derogate from the general rules for determining the applicable legislation in the field of social security. In such cases, insurance corporations of two or more Member States may conclude the exceptional agreement to modify the general rules.

The concept of „delegation” is very often confused with „secondment”. A mistake in distinguishing these two concepts can have very serious consequences. Therefore, we will try to explain what differs a delegation from a secondment.

The regulations require employers to report the posting of workers to the appropriate register in the destination country. In France, such a register is SIPSI, in Belgium – Limosa, in Germany – ZOLL. In Denmark, however, the declaration must be made in RUT.