Lockout-Tagout (LOTO) is a safety procedure used in workplaces to ensure that machines and equipment are properly shut off and not able to be started up again before maintenance or servicing is completed. This process involves placing a lock on the energy-isolating device and attaching a tag that warns others not to operate the equipment. The primary goal of LOTO is to prevent accidental machine start-up, which can lead to serious injuries or fatalities. By following these procedures, workers can safely perform their tasks while minimizing the risk of exposure to hazardous energy sources such as electricity, hydraulics, or mechanical forces.