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From Wikipedia, the free encyclopedia. The permissible exposure limit (PEL or OSHA PEL) is a legal limit in the United States for exposure of an employee to a chemical substance or physical agent such as loud noise. Permissible exposure limits are established by the Occupational Safety and Health Administration (OSHA).
OSHA (the Occupational Safety and Health Administration) is a part  of the US Department of Labor that establishes, issues, and  enforces national workplace safety regulatio â¦ ns. These are designed  to make job areas and practices safer for US workers.    OSHA was created by the Occupation Safety and Health Act of  December 29, 1970. It is mandated to prevent on-the-job accidents  and injuries in US factories and other industries.