The U.S. Occupational and Safety and Health Administration has issued its Emergency Temporary Standard on Covid-19 Vaccine and Testing for employers with 100 or more employees. In Frequently Asked Questions OSHA explains the headcount rules specifically applicable to staffing agencies and clients. The ETS adopts the policy urged by ASA and other groups that employers not be required to pay for Covid-19 testing. The ETS technically is effective Nov. 5, 2021, the date of publication in the Federal Register, but employers have until 30 days after publication in the Federal Register (Dec. 6, 2021) to comply with the requirements—except for the testing provisions, which become effective 60 days after date of publication (Jan. 4, 2022).