Contamination/exposure limits

Use administrative controls such as scheduling to limit woiker exposure to many workplace hazards such as working in hot areas. However, OSHA prohibits employee scheduling to meet the requirement of air contaminant exposure limits. The scheduling of maintenance and other high exposure operations during evenings or weekends can reduce exposures. Use job rotation to limit repetitive motion tasks or reduce the exposure time to occupational noise hazards. Use a work-rest schedule for very hazardous or strenuous tasks. 

Under the OSH Act, employers are required to provide employees with a workplace free from recognized hazards. Employers are also required to maintain accurate records of employees exposure to potentially toxic materials required to be monitored or measured, conduct periodic inspections, and notify employees if they are exposed to toxic materials at higher levels than those prescribed by existing health and safety regulations. 18.1.6.1.2 Air Contaminants Exposure Limits ... 

Air Contaminants—Permissible Exposure Limit," Title 29 Code of Federal Regulations Part CFR 1910.1000, OSHA, 1989, p. 3112. 

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