Japan’s government has released a list of more than 300 companies that have breached labour laws, in a move designed to crack down on firms that are putting employees at risk of literally working themselves to death.

Numerous cases of people dying as a result of being overworked, known in Japan as ‘karoshi’, has marred the nation’s reputation and earlier this year a government survey revealed that a fifth of Japan’s workforce is at risk of killing themselves by putting in too many hours.

In 2015, a high-profile case of an advertising agency employee taking her own life after working 100 extra hours a month, prompted international outcry. The government now hopes that a name-and-shame approach will help eliminate the practice of extreme workaholism.

The list published this week on the country’s labour ministry’s website includes major firms like advertising agency Dentsu, where the 2015 death occurred, electronics maker Panasonic, as well as a local unit of Japan Post, according to Reuters.

All the 334 companies on the list received warnings for excessive overtime and other labour violations between October last year and March this year. But the labour ministry also said that not all companies that were being investigated had been made public.

It said that it only publicises company names if it deems that doing so would encourage stricter compliance and be for the greater good of the Japanese public.

The current list is due to be updated monthly.

In February, Japan’s government launched a campaign urging employees to leave the office at 3pm – so much earlier than usual - on every last Friday of the month.

As well as helping to eliminate 'karoshi', the government said it hoped the move would also provide extra stimulus to the economy.

The worst jobs for your health Show all 10 1 /10 The worst jobs for your health The worst jobs for your health 10. Surgical and medical assistants, technologists, and technicians Overall unhealthiness score: 57.3 What they do: Assist in operations, under the supervision of surgeons, registered nurses, or other surgical personnel and perform medical laboratory tests. Top three health risks: 1. Exposure to disease and infections: 88 2. Exposure to contaminants: 80 3. Exposure to hazardous conditions: 69 The worst jobs for your health 9. Stationary engineers and boiler operators Overall unhealthiness score: 57.7 What they do: Operate or maintain stationary engines, boilers, or other mechanical equipment to provide utilities for buildings or industrial processes. Top three health risks: 1. Exposure to contaminants: 99 2. Exposure to hazardous conditions: 89 3. Exposure to minor burns, cuts, bites, or stings: 84 The worst jobs for your health 8. Water and wastewater treatment plant and system operators Overall unhealthiness score: 58.2 What they do: Operate or control an entire process or system of machines, often through the use of control boards, to transfer or treat water or wastewater. Top three health risks: 1. Exposure to contaminants: 97 2. Exposure to hazardous conditions: 80 3. Exposure to minor burns, cuts, bites, or stings: 74 The worst jobs for your health 7. Histotechnologists and histologic technicians Overall unhealthiness score: 59.0 What they do: Prepare histologic slides from tissue sections for microscopic examination and diagnosis by pathologists. Top three health risks: 1. Exposure to hazardous conditions: 88 2. Exposure to contaminants: 76 3. Exposure to disease and infections: 75 The worst jobs for your health 6. Immigration and customs inspectors Overall unhealthiness score: 59.3 What they do: Investigate and inspect people, common carriers, goods, and merchandise, arriving in or departing from the US or between states to detect violations of immigration and customs laws and regulations. Top three health risks: 1. Exposure to contaminants: 78 2. Exposure to disease and infections: 63 3. Exposure to radiation: 62 The worst jobs for your health 5. Podiatrists Overall unhealthiness score: 60.2 What they do: Diagnose and treat diseases and deformities of the human foot. Top three health risks: 1. Exposure to disease and infections: 87 2. Exposure to radiation: 69 3. Exposure to contaminants: 67 The worst jobs for your health 4. Veterinarians, veterinary assistants, and laboratory animal caretakers and veterinary technologists and technicians What they do: Diagnose, treat, or research diseases and injuries of animals and perform medical tests in a laboratory environment for use in the treatment and diagnosis of diseases in animals. Top three health risks: 1. Exposure to disease and infections: 81 2. Exposure to minor burns, cuts, bites, or stings: 75 3. Exposure to contaminants: 74 The worst jobs for your health 3. Anesthesiologists, nurse anesthetists, and anesthesiologist assistants Overall unhealthiness score: 62.3 What they do: Administer anesthetics or sedatives during medical procedures, and help patients in recovering from anesthesia. Top three health risks: 1. Exposure to disease and infections: 94 2. Exposure to contaminants: 80 3. Exposure to radiation: 74 The worst jobs for your health 2. Flight attendants What they do: Provide personal services to ensure the safety, security, and comfort of airline passengers during flight. Greet passengers, verify tickets, explain use of safety equipment, and serve food or beverages. Top three health risks: 1. Exposure to contaminants: 88 2. Exposure to disease and infections: 77 3. Exposure to minor burns, cuts, bites, or stings: 69 The worst jobs for your health 1. Dentists, dental surgeons, and dental assistants Overall unhealthiness score: 65.4 What they do: Examine, diagnose, and treat diseases, injuries, and malformations of teeth and gums. May treat diseases of nerve, pulp, and other dental tissues affecting oral hygiene and retention of teeth. May fit dental appliances or provide preventive care. Top three health risks: 1. Exposure to contaminants: 84 2. Exposure to disease and infections: 75 3. Time spent sitting: 67

Japan’s labour force and its population are shrinking and the country said that it wanted to reduce working hours to encourage women – even those who have caring duties – to work, while getting men more involved in raising children.

Increased leisure time should also mean more time between the sheets to boost the birth rate, Reuters at the time reported.