General ventilation can be for a large area such as a building s air handling system. Local ventilation is designed for a small area or specific operation like a fume hood. Ergonomics makes work safer by changing the job to fit the needs of each worker. Equipment that allows workers to do their jobs without having to work in awkward or uncomfortable positions is one way to prevent injuries. 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.