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Municipal Technical Advisory Service (MTAS)

Recording and Reporting Work Related Events

Reference Number: MTAS-1491
Reviewed Date: 12/07/2021

A work-related injury or illness must be recorded on the OSHA 300 Log if an event or exposure in the work environment either caused or contributed to the resulting condition or significantly aggravated a pre-existing injury or illness. Work-relatedness is presumed for injuries and illnesses resulting from events or exposures occurring in the work environment unless a specific exception exists. 29 C.F.R. § 1904.7(a).