Employment and Social Development Canada
Canada Labour Code Amends Replacement Worker Rules
Part I (Industrial Relations) of the Canada Labour Code (the Code) governs workplace relations and collective bargaining between unions and employers. This part contains provisions related to replacement workers and maintenance of activities, as well as dispute resolution, strikes and lockouts. It outlines the labour relations rights and responsibilities of employers, trade unions and employees.
On June 20, 2025, amendments to Part I of the Code and the Canada Industrial Relations Board Regulations, 2012, that were proposed through Bill C-58, An Act to amend the Canada Labour Code and the Canada Industrial Relations Board Regulations, 2012, which received royal assent on June 20, 2024, came into effect. This legislation has two main components.
First, it repealed the previous limited prohibition on replacement workers and replaced it with the following:
Second, it amended the maintenance of activities process as follows:
https://www.canada.ca/en/employment-social-development/news/2025/06/amendments-to-the-canada-labour-code-related-to-replacement-workers-and-the-maintenance-of-activities-process.html