The Department of Labor’s Occupational Safety and Health Administration (OSHA) has issued new health and safety rules requiring workers employed at large companies to get a COVID-19 vaccine or have regular testing for the virus.

The mandate issued on Thursday, stating that companies with 100 or more employees will be required to have all employees vaccinated against COVID-19 by Jan. 4 or have the employees receive testing for the virus on a weekly basis.

Companies who fail to comply with the new mandate could face penalties of up to $14,000 per violation.

According to reports, President Joe Biden reviewed the stipulations in September as part of a six-prong strategy to combat the reassurances of the virus during cold and flu season.

An OSHA official told reporters that they will only targeting companies who receive complaints.