By Michelle Cook ( August 4, 2026, 8:50 AM EDT) -- The Canadian Industrial Relations Board (CIRB) has released its first merits decision interpreting the new replacement worker provisions under the Canada Labour Code, which were introduced in 2025 through Bill C-58. The decision clarifies that the new rules do not create a blanket prohibition on the use of replacement workers in unionized federally regulated workplaces but instead restrict the use of specified categories of persons during lawful strikes and lockouts....