Seventeen staff at Alarm Watch in Whanganui have signed up to improve their health in a 'biggest loser' competition.
Organiser Jesse Hooks said staff kicked off their competition on January 29, inspired by past successes at the security company.
"Back in 2014 we had a biggest loser competition which was really successful," Mr Hooks said.
"The company has now about twice the number of staff and the competition has come up in conversation with new staff members. There was a lot of interest in running it again."
The 12-week contest requires participants to weigh in every week, with the winner being the person who has lost the greatest percentage of their starting body weight by the end of the competition.