An obscure White House office is expected to give the green light any day to the rule’s fine print detailing how and when companies will have to require their employees to be vaccinated or undergo weekly testing.

Unlike healthcare providers or federal employees, who may not have a testing alternative to vaccination, private sector workers won’t necessarily face termination if they don’t get vaccinated.

But some businesses may choose to impose their own more stringent vaccination mandate, and it’s possible that businesses may be allowed to pass on the cost of weekly COVID-19 testing to their unvaccinated employees.

Chamber of Commerce and other groups that represent large employers are worried that the proposal’s threshold -– applying to companies with 100 or more employees – could cause workers to migrate to jobs at smaller employers where they won’t need to be vaccinated.

Freedman, who took part in the chamber’s call with administration officials, said the 100-worker threshold would also hurt job creation by giving employers who have 90 or 95 employees a reason not to expand.

State government vaccination mandate deadlines went into effect this week in Washington state, Massachusetts and New Jersey after a host of legal challenges by state employees and first responders’ unions.

In Washington, the state patrol lost 127 employees, including 67 troopers, who left due to the COVID-19 vaccination mandate for state employees, about 6% of the agency’s staff, officials said.

The manufacturers, the Chamber of Commerce and other business groups are also pushing the administration to let employers make unvaccinated workers pay for their own weekly COVID-19 testing.