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Nov 4, 2026 Ministry of Health, Labour and Welfare (MHLW) Labor law & HR Under consideration (not final)

Expert study group on chemical substance management to discuss concentration standards on November 10A meeting about the limit on how strong factory chemicals may be in the air

On November 4, 2026 (Reiwa 8), the Ministry of Health, Labour and Welfare announced that the 7th FY2026 expert study group on chemical substance management will be held on Tuesday, November 10, 2026, from 14:00 to 17:00. The agenda covers the examination of concentration standard values and measurement methods for each substance subject to a concentration standard value, plus other business. Observation is online only, with no observation at the venue, and applications close at 12:00 on Friday, November 6, 2026. Materials are scheduled to be posted on the ministry's website by Monday, November 9.

The published schedule
  1. November 4, 2026 (Reiwa 8)The Ministry of Health, Labour and Welfare announces the 7th meeting
  2. Friday, November 6, 2026, 12:00Deadline for applications to observe online
  3. By Monday, November 9, 2026Meeting materials are scheduled to be posted on the website
  4. Tuesday, November 10, 2026, 14:00-17:00The study group meets to discuss concentration standard values and measurement methods

Key points

  • The 7th FY2026 expert study group on chemical substance management will be held on Tuesday, November 10, 2026, from 14:00 to 17:00
  • The agenda is (1) examination of concentration standard values, (2) measurement methods for each substance subject to a concentration standard value, and (3) other business
  • Observation is online only; observation at the venue is not possible. Capacity is about 50 people, including the press
  • Applications to observe close at 12:00 on Friday, November 6, 2026
  • Meeting materials are scheduled to be posted on the ministry's website by Monday, November 9
Who is affected: Businesses that use chemical substances such as organic solvents and specified chemical substances, in manufacturing, construction, cleaning or research, and the staff responsible for their safety and health

What to do in practice

  • Companies with sites that use chemical substances should check, in the materials to be published by November 9, whether the substances they handle are among those under examination for concentration standard values
  • Anyone wishing to observe should apply for online observation by the deadline of 12:00 on November 6
Note: This is an announcement that a study group will meet; it does not mean that concentration standard values or measurement methods have been decided to change. What will be decided as a result of the examination, and when, is not settled. Please check the materials and minutes published later for the content and conclusions of the meeting.

Factories and building sites use chemicals such as solvents that dissolve oil, and paint. Breathing air that is thick with them is bad for the body, so the country sets a limit saying how much of each substance may be in the air. On November 10, a panel of experts will meet to talk about how those limits are set and how the amount in the air should be measured. The announcement came out on November 4, and the materials for the meeting are due on the website by November 9.

The run-up to the meeting
  1. 1. AnnouncementOn November 4, the country announced that the meeting would be held
  2. 2. ApplicationsPeople who want to watch apply by noon on November 6
  3. 3. The meetingThey talk from 2 p.m. to 5 p.m. on November 10

Points

  • On November 10, from 2 p.m. to 5 p.m., a panel of experts will meet about managing chemicals
  • They will talk about how to set the limit for the air, and how to measure it
  • The meeting can be watched online, and people who want to watch must apply by noon on November 6
For example: Some things, like the chlorine in a swimming pool, are useful in small amounts but bad for the body if they are too strong. So a limit is set, and the amount is measured from time to time to make sure. The chemicals used in factories work the same way.

What the words mean

Chemical substance
Materials such as solvents and paint that are used in factories and on building sites
Concentration standard value
The limit on how much of a substance may be present in the air
Observing a meeting
Listening to the discussion without taking part in it
Sources (official)
Checked against the source on: Nov 5, 2026

This article previews items that are still under consideration or only requested. Whether they will be adopted, and whether the content or timing will change, is not final. Please check the official source again once a decision is made.

This article summarizes and explains materials published by government agencies and is not advice on any individual case. Rules can change, so for actual procedures and decisions always check the latest original materials and consult professionals such as tax accountants or labor and social security attorneys. English, Simplified Chinese and Traditional Chinese versions are translations prepared from the Japanese articles for convenience. If anything differs, the Japanese text and the original source take precedence.

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