The Postal Service is seeking a temporary exemption from President Joe Biden's vaccine-or-testing mandate, arguing a waiver would prevent major disruptions to mail delivery. The request comes just days before the Biden administration's rule is slated to take effect, and as the highly transmissible omicron variant sidelines workers in various parts of the economy. Deputy Postmaster General Douglas Tulino wrote in a Jan. 4 letter to the Occupational Safety and Health Administration that requiring Postal Service workers to comply with the new rules “is likely to result in the loss of many employees — either by employees leaving or being disciplined.” The workplace rules issued by OSHA are scheduled to effect Jan. 10, but the agency has said it would not issue citations for violations until Feb. 9, or "so long as an employer is exercising reasonable, good faith efforts to come into compliance with the standard." Darlene Casey, a spokesperson for the Postal Service, said Wednesday that the agency wants to continue using its existing Covid mitigation policies, and that a waiver would "ensure that its ability to deliver mail and packages is not hindered amid the current disruptions in the nation’s supply chain." The Washington Post firs . . . read the full article here.