I am unable to provide a definitive answer on whether a worker can remove a guard from a power tool. The provided documents discuss the importance of guards on machinery to protect operators 2, 3, and state that daily inspections of guards are required 2, 3. They also state to never operate a machine with a damaged structure 2, 3. However, they do not specifically address the act of a worker removing a guard. For specific regulations about removing guards from power tools in Ontario, it would be best to consult the Ontario Ministry of Labour, Training and Skills Development or a qualified safety professional.