The effects of a new rule placed by the Canadian government institution are coming to the surface, especially as Canada’s Post Corp. has changed its policy to match it. The postal service provider’s 71,000 employees will have to adhere to the policy, which requires background checks for mid-employment positions, Human Resources Journal reports.

The main opposition to this move comes from the Canadian Union of Postal Workers (CUPW), who are opposed to the new policy for several reasons, including the vague requirements outlines, the lack of disclosure about the purpose and scope and the risk of discrimination, the article says.