TOKYO - The Japanese government for the first time released a nationwide list of over 300 companies that have violated labor laws, hoping this name-and-shame tactic would help eliminate abuses and prevent karoshi, or death by overwork.

In the list published this week on the labor ministry's website, major companies such as advertising agency Dentsu and electronics maker Panasonic are named for illegal overtime, and a local unit of Japan Post, a subsidiary of Japan Post Holdings, is mentioned for failing to report a work-related injury.

Abuses such as illegal overwork have become so common in Japan in the past decade that such companies have been dubbed "black" companies in the media. Public outrage over long working hours and the suicide of a young worker at Dentsu in 2015, later ruled by the government as karoshi, have pushed Prime Minister Shinzo Abe to make labor reform a key policy plank.

The labor ministry's list includes 334 companies that have received warnings for excessive overtime and other labor violations between October and March. Regional labor bureaus had already individually made these cases public, though they had sometimes withheld the company names.

However, not all companies under investigation are publicized or included in the list, an official said. The ministry publicizes the companies' names only when it decides doing so would help encourage compliance and would be in the public good, she added.

The nationwide list will be updated every month.

Abe's government in March endorsed an action plan for sweeping reforms of employment practices, including caps on overtime and better pay for part-time and contract workers.

The proposals, which may come into effect from 2019, will only add to strains already felt by firms grappling with a deepening labor shortage due to a rapidly aging population. That said, more pressure to boost productivity is seen as long overdue and could boost growth in the long term.

Lawyers and activists, however, have said the steps the government has so far proposed do not go far enough.

A spokesman for Dentsu declined to comment, and Japan Post could not be immediately reached for comment. A Panasonic spokeswoman said the company takes the labor violation case seriously and will work to prevent such issues in future.

Reuters - Xinhua