Not an ordinary death, a reporter named Miwa Sado, is believed to have health problems after overtime 159 hours in a month.
The 31-year-old journalist, who was in charge of political news in Tokyo, was found dead in her bedroom in July 2013.
When the body is found, one of Sado's hands holds a cell phone.
"The NHK met the parents in their home in the morning, and apologized," a spokeswoman for NHK told AFP.
An investigative process that was held a year after the death of this journalist concluded, Sado died due to excessive overtime work.
This woman is known to only take two days off in the months before she dies.
After four years, NHK finally opened the case to the public.
NHK also meet the pressure of the Sado family who pay attention so that similar cases do not recur in the future.
This case again raises the problem of "karoshi" in Japan, which means death due to forced labor.
Of course this case also be a blow to NHK who have campaigned against the old culture in the country.
Sato covered Tokyo's June 2013 election, and a high-level election for the next national parliament.
He was found dead three days after the upper house election.
"My heart broke down at the thought that she might want to call me at her last moments," her mother was quoted as saying by Harian Asahi.
"With Miwa Sado's departure, I feel half of my body is torn, I will not be able to laugh out loud for the rest of my life," he said.
This news shocked Japan, because NHK has been actively preaching tragic death cases in other companies.
Including the case of a young woman's suicide at the main advertising agency Dentsu, 2015
The woman chose to end her life after doing more than 100 hours of overtime in a month.
Japan's forced labor system still prevails in his country
