Canada Limits War Industry Strikes (1939)

Tue Nov 07, 1939

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Image: Asbestos Strike in Canada, from Centre d’archives de la région de Thetford - Fonds Famille Gérard Chamberland

On this day in 1939, Canada extended the Industrial Disputes Investigation Act (IDIA) to cover disputes between employers and employees engaged in “war work”, severely limiting the contexts in which a strike was legal to initiate.

The IDIA, first passed in 1907, forbade strikes and lockouts in mines and certain public utility industries until a dispute had first been dealt with by a board of conciliation. Before 1939, only forty-one of one thousand applications actually made it to the strike stage.

War work was defined as including “the construction, execution, production, repair, manufacture, transportation, storage or delivery of munitions of war or supplies” and “the construction, remodelling, repair or demolition of defense projects.” After the extension of the IDIA, the applications to strike increased six-fold, however only seven strikes (4% of the total) were allowed in the following year and a half.