Study the scenario below. Based on your knowledge of the legislation in Ontario, provide details on the accident causation. If you were an Inspector with the Ministry of Labour, Training and Skills Development, what violations of the OHSA and the construction regulation could lead to prosecution?

Scenario

A young worker was standing on a section of pipe in an unsloped, unshored trench about 6.5 feet deep. He was waiting for another worker to deliver a new section of pipe by excavator. The worker's supervisor noticed water at the bottom of the trench, about 6 to 8 feet from the worker, and told him to get out. The worker stepped off the pipe into the trench to retrieve a laser stick before exiting the trench. At that moment, part of the trench wall collapsed, burying the worker almost up to his chest and causing serious injuries.