Hours of Work (Coal Mines) Convention, 1931

**ILO Convention**
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C31
Hours of Work (Coal Mines) Convention, 1931
Date of adoption	June 18, 1931
Date in force	Withdrawn May 30, 2000
Classification	Hours of Work
Subject	Working Time
Hours of Work (Commerce and Offices) Convention, 1930	Protection against Accidents (Dockers) Convention (Revised), 1932

Hours of Work (Coal Mines) Convention, 1931 was an International Labour Organization Convention.

It was established in 1931:

Having decided upon the adoption of certain proposals with regard to hours of work in coal mines,...

Modification

This Convention was subsequently revised by Convention C46.

This convention was never brought into force, and was withdrawn May 30, 2000 at the ILO General Conference.

**The following countries have ratified this Convention:**
Country	Date	Notes