The Supreme Court will begin hearing legal challenges to President Biden’s employer vaccine mandate next month.

The Hill reports:

In a pair of orders issued Wednesday, the court said it would hear oral arguments on Jan. 7 over President Biden‘s vaccine-or-test mandate for large employers and a regulation from the Centers for Medicare and Medicaid Services (CMS) requiring vaccines for health care workers.

In scheduling the accelerated timeline for the cases, the Supreme Court deferred ruling on whether to block the new rules until after hearing the challenges.

White House press secretary Jen Psaki said in a statement Wednesday night the administration is “confident in the legal authority” of the requirements and the Department of Justice will “vigorously defend” the measures.

“Especially as the US faces the highly transmissible Omicron variant, it is critical to protect workers with vaccination requirements and testing protocols that are urgently needed,” Psaki said.

The Occupational Safety and Health Administration (OSHA) issued a rule last month requiring companies with more than 100 employees to be vaccinated against Covid-19.

The CMS rule requires virtually every health care worker in the country to be vaccinated. Each of the rules brought a wide array of legal challenges across the country.