More and more businesses in recent days have walked back previous rules mandating COVID-19 vaccine sas a condition for employment in a bid to keep workers.

Earlier this week, Amtrak—a quasi-public corporation—became the latest to rescind its vaccine requirement amid concerns about staff shortages and cut service in January. In a memo sent to staff that was obtained by The Epoch Times, Amtrak CEO William Flynn said the company would do away with the mandate that would have given employees until Jan. 4 to get fully vaccinated or go on unpaid leave.

About 500 out of more than 17,000 Amtrak workers remain unvaccinated, according to the memo. Still, the sudden loss of that many workers would have caused service disruptions, Flynn suggested, while noting that Amtrak was acting in accordance with recent court orders handed down against President Joe Biden’s sweeping vaccine mandates.

Several hospitals and healthcare systems have similarly rescinded vaccine mandates for employees and cited labor issues that were triggered by the new requirements. In early December, Florida’s AdventHealth announced the end of its vaccine requirement for some 83,000 workers, also citing the several recent court injunctions against federal mandates.

“Due to recent decisions by the federal courts to block the [Centers for Medicare & Medicaid Services] vaccine mandate, we are suspending all vaccination requirements of our COVID-19 vaccination policy,” AdventHealth Chief Clinical Officer Neil Finkler said in a letter to staff. The move came after the Centers for Medicare & Medicaid Services confirmed to The Epoch Times that the agency suspended enforcement following two court orders several weeks ago.