A 24-year-old pressured to work long, hard hours beyond what she could tolerate at the largest advertising agency in Japan jumped from her third-floor dorm room on Christmas Day of last year.

This story went viral, and labor researchers around the country mumbled to themselves, "Dentsu again?"

Dentsu is an ad giant notorious for brutal work hours and its merciless management style. Any labor law textbook worth its salt that covers karōshi (death by overwork) will also introduce the Supreme Court's famous Dentsu death-by-overwork case. In August 1991 a man, also 24, hanged himself at his home. In 2000, Japan's highest court ruled that the "suicide was caused by horrendous working conditions." Eventually Dentsu and the surviving family agreed on a settlement of ¥168 million.