A working partner is a partner who exercises an activity in a company to yield a return on the capital, which is partly his. His activity can be managerial or administrative in nature. However, this is not necessary. The working partner is not required to perform managerial actions. 

As from January 1st 1997 the term "working partner" has been removed from all legislation texts and has been replaced with the term "business manager". Although the name has changed, the insurance obligation remains applicable.