OSHA's vaccine rule is on hold. Here's why employers should still comply.

Businesses across the U.S. are facing uncertainty over the Biden administration's new vaccine rule after a federal appeals court on Saturday temporarily halted the regulation. But legal experts say companies subject to the requirement should plan on complying with the 490-page order or risk being caught unprepared — and potentially face costly fines — if the rule moves forward.

"They should continue to prepare," said Julie Vanneman, an attorney with Dentons Cohen & Grigsby, where she works on environmental and health and safety matters. "It's possible that the stay will be continued and the regulations won't actually be in effect as of December 6, which is the deadline for compliance for most of the rules, but it's possible they could go forward."