Ad agency head to step down after employee suicide

The president of Japan's biggest advertising agency said he plans to resign, a year after an employee suicide linked to allegations of extreme overwork.

The announcement came as authorities referred Dentsu and one of its executives to prosecutors on suspicion of violating labor law by forcing the 24-year-old employee to work illegally long hours.

Matsuri Takahashi, a graduate of the prestigious University of Tokyo, committed suicide on Christmas Day 2015 at a company dormitory.