- Permit to Work is a documented management system that includes specific processes to request, record, review, and authorise tasks to be carried out by designated employees. An important component of Permit to Work systems is to reduce conflicts while assigning tasks as everything is recorded.

- A permit to work (PTW) system is a process to keep employees safe during hazardous and nonstandard operations. It involves assessing the risks, establishing a proper safety protocol based on the risks, and proper communication throughout the entire process. The PTW system is designed to mitigate environmental, health, sustainability, and safety risks in certain operations.