Health and Safety

Basic Stance/Policy

Five THK facilities in Japan earned OHSAS1 18001 certification in 2010. In 2018, we took proactive measures in accordance with our policy. In 2019, we worked on transitioning to the ISO 450012 occupational health and safety management system, as OHSAS will expire in 2021.

  • 1 OHSAS: Occupational health and safety management system
  • 2 ISO 45001: Occupational health and safety management system standard published in March 2018


Create a pleasant work environment with zero work-related accidents or illnesses.

Health and Safety Management Structure

Industrial Machinery Company Production Division Safety Structure

Activities and Results (Including Goals)

2018 Occupational Health and Safety Activities in the Production Division

Each production facility has established concrete goals and activities to create a pleasant work environment with zero work-related accidents or illnesses. We also pour our efforts into conducting monthly health committee meetings and health and safety patrols, as well as education campaigns that include health and safety seminars. We are strengthening our collaboration with occupational physicians with regard to metal health, such as by referring employees to specialists as necessary.

2018 Occupational Health and Safety Activities in the Production Division

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Objective No. Activity Result
  1. Allow occupational health and safety management system (OHSAS 18001) to reach all employees
1 Implement risk assessments and workplace safety training Met
2 File and provide information pertaining to relevant regulations (chemical substance risk assessments) Met
3 Prepare and perform internal audits (reciprocal audits) Met
4 Conduct management reviews Met
  1. Revitalize health and safety committee activities
5 Promote disaster prevention Met
6 Implement traffic safety activities (achieve zero traffic accidents) Not met
7 Conduct workplace safety patrols Met
8 Promote 5S (6S) activities Met
  1. Eliminate workplace accidents
9 Achieve 3.1 million hours without any accidents (class 1 accident-free record)
Prevent workplace accidents from occurring (zero accidents)
Promote submission of proposals to prevent near misses (production: 1/month per group, indirect: 1/month per department)
Not met
10 Ensure employees confirm machines have completely stopped Not met
11 Train new employees (temporary and mid-career hires) thoroughly Met
12 Provide instruction to business partners who work on site and visitors Met
  1. Enhance health management
13 Perform regular and special health checks Met
14 Promote mental health Met
15 Perform stress checks Met
16 Implement illness prevention activities Met
17 Make improvements based on occupational physician recommendations Met

Incident and Severity Rates (Data)

Japan’s national averages have not been published for 2018, but both our incident rate and severity rate have been lower than the national average for the past four years.

Incident and Severity Rates

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(THK/Japan average (%))
  2014 2015 2016 2017 2018
Incident rate 0.20/1.66 1.13/1.61 0.25/1.63 0.82/1.66 0.76/1.83
Severity rate 0.00/0.09 0.01/0.07 0.00/0.10 0.01/0.09 0.01/0.09
  • * Incident rate: Frequency of work-related injuries
    [IR = (Number of incidents) ÷ (Labor hours worked) × 1,000,000]
  •   Severity rate: Severity of work-related injuries
    [SR = (Number of lost workdays) ÷ (Labor hours worked) × 1,000]
  • * Due to the change in the fiscal year period in 2017, the 2017 data reflects a period from January 1 to December 31, 2017, and the data for prior years reflects a period from April 1 to March 31.

Annual Physical Participation Rate

THK has its employees in Japan receive annual physicals and recommends medical examinations through our health insurance society. The following tables show the annual physical participation rate and the examinations our health insurance society offers.

Annual Physical Participation Rate (THK CO., LTD. only)

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2014 2015 2016 2017 2018
100% 100% 100% 100% 100%
Medical Examinations Offered
General check-up Younger than 35
Gastric cancer screening Younger than 35
Lifestyle disease screening 35 or older
Comprehensive health examination 35 or older
Uterine and breast cancer screening -


Comparing the results of the medical questionnaire filled out before the annual physical with statistics from the National Federation of Health Insurance Societies, we learned that few employees at our headquarters regularly exercise, and many grab dinner less than two hours before they go to bed. To inspire lifestyle changes, we hosted a RIZAP (pronounced “rye-zap”) seminar in November 2018.

Practicing stretching

Establishing a Safety Dojo

DALIAN THK established its own safety dojo in September 2018 to improve safety, quality, and employee skills. This dojo operates under the slogans of “Safety is the top priority!” and “Instill safety awareness through practice and aim to be a workplace with zero accidents!”

This dojo has a training area to teach basic safety knowledge and hazard prediction training, as well as an interactive area where employees can experience the alarming sensation of getting caught in a machine or receiving an electric shock. By the end of December, training was conducted at the dojo 28 times, with around 940 employees participating. DALIAN THK will continue to use its dojo to conduct training and aim for higher safety, quality, and employee skill levels.

Employees listening attentively to the lesson

Mental Health Class

Mental health issues in the workplace and health disorders caused by overwork are currently major concerns in the field of occupational health. As a company event to coincide with Japan’s National Occupational Health Week, occupational physician Dr. Kouda gave a class on mental health at the THK RHYTHM Hamamatsu plant in October 2018.

Around 100 supervisors and managers attended. One participant commented, “He explained what happens between when a person becomes depressed and when they return to work, from the differing perspectives of the individual, their colleagues, and the company. It was really easy to follow.” Another noted, “It was a good opportunity to learn about something I might encounter.” We will continue to deepen awareness of mental health issues to improve and create an even better work environment.

Dr. Takahiko Kouda giving his lecture