Ontario Operator-in-Training (OIT) Practice Exam

In which situation can a worker refuse work under the OHSA?

1. When they are not feeling well

2. When there are reasonable grounds that the work is dangerous

3. When they are too tired

4. When they disagree with a supervisor's instruction

The correct answer is: When there are reasonable grounds that the work is dangerous

A worker can refuse work under the Occupational Health and Safety Act (OHSA) when there are reasonable grounds to believe that the work is dangerous. This provision is in place to ensure that workers have the right to protect themselves from potential harm or unsafe conditions while performing their jobs. If a worker identifies a situation that poses a risk to their health or safety—whether it’s a hazardous material, unsafe equipment, or any other dangerous condition—they are entitled to refuse that specific work until the situation is addressed. While feeling unwell, being too tired, or disagreeing with a supervisor's instruction may present valid concerns, these factors alone do not typically meet the criteria for a formal work refusal under the OHSA. Work refusals must be based on clear evidence that the work itself presents a danger, rather than personal discomfort or disagreement with management practices.