To prevent or reduce the severity of the dangers of the job, and must be worn at all times, working from the work environment, such as noise, chemicals, light. The heat.
To prevent or reduce the severity of the hazard and must be worn at all times by the work environment in the workplace, such as noise, light, chemicals, heat.
To prevent or reduce the severity of harm from work and will have to wear at work from the environment to work, such as noise, light, chemicals. The heat.