What action can cause a directive from an industry safety representative to cease being effective?

The effectiveness of a directive from an industry safety representative can be terminated when it is withdrawn in writing by the representative. This is significant because a written withdrawal provides a clear and formal mechanism for the representative to revoke the directive, ensuring that all parties are informed of the change in status. This process not only maintains clarity in communication but also upholds the integrity of safety management systems by formalizing the cessation of directives.

In many workplace safety frameworks, especially within mining and heavy industries, directives issued by safety representatives are often critical for compliance and the protection of worker health and safety. The ability to withdraw such directives in writing establishes a controlled and documented process, allowing for accountability and traceability of safety decisions.

The other options discuss various scenarios, such as revising safety protocols, changes in site management, or increasing safety inspections. While these may impact the overall safety environment or practices within a workplace, they do not directly relate to the formal rescinding of a directive issued by a representative. Therefore, the only action that specifically causes a directive to cease being effective is the formal withdrawal by the representative in writing.