Job rotation, doing different tasks and rest breaks all help to reduce repetitive motion. Workers Do Their Jobs Changing the way that jobs are performed can reduce injuries. PPE is the least effective way to protect workers because it does not eliminate or control the hazards. If the equipment fails, the worker is immediately exposed to the hazard. PPE is needed if there is no other solution, until a better control is installed or as a supplement to other protective measures.
Ventilation is the best way to control exposure to harmful substances in the air.
Where ventilation is not adequate, respirators are used to avoid breathing and swallowing poisons in the air. Atmosphere-supplying respirators provide workers with air from a safe source. Supplied-air respirators provide the user with clean air through an air line. Air-purifying respirators filter harmful dusts, gases, vapors and mists from the air. As the worker breathes, the air is drawn through filters that capture contaminants.