Original sentence: In December 2017, Wagamama apologised after it was revealed some workers in Finchley were warned they would face disciplinary action if calling in sick over Christmas.The manager of the North Finchley branch asserted it was the responsibility of staff members, according to their contracts and handbook, to find somebody to cover their shifts.Wagamama said this was an isolated incident, not part of its employment policy
Edited sentence: In December 2017, the chain was forced to apologise after it was revealed some of their workers were warned they would face disciplinary action for calling in sick over Christmas.The manager of their North Finchley branch had asserted it was the responsibility of staff members, according to their contracts and handbook, to find somebody to cover their shifts.Wagamama claimed this was an isolated incident, and that it was not part of its employment policy