On March 25, 2016, the Occupational Safety and Health Administration (OSHA) issued a final rule regarding respirable crystalline silica. Under this rule, employers are subject to new standards for protecting workers. The rule became effective on June 23, 2016.
However, employers in the construction industry had until Sept. 23, 2017, to comply with the rule. Employers in the maritime and general industries had until June 23, 2018, to comply.