co-employment

noun2

1. •
   A relationship between two or more employers which involves having rights and obligations concerning the same employee for the same work, such as the relationship between a contract agency and one of its clients.
2. •
   An arrangement where two businesses effectively work as a single enterprise, thereby causing the parent company to incur legal liability and responsibility toward employees of the subsidiary company.

   • Overseas employees appear to be more aware of possible co-employment claims against US parent companies. — 2014