Almost all the remaining employees National Institute of Occupational Safety and Health Fired Friday, multiple officials and layoffs told CBS News, from approving plans for new safety equipment to firefighters’ health.

The majority of the Centers for Disease Control and Prevention’s work was held on April 1 at Secretary of Health and Human Services Robert F. Kennedy Jr.

New requirements for firefighters’ injuries and workplace health hazards have been stopped. CDC Program Help Texas Schools The spread of measles infection has also been cancelled due to layoffs.

NIOSH employees received a notice of layoffs late Friday, including workers in some World Trade Center Health Programs, Miner Safety and Firefighter Health Programs. Workers who have been asked to return to work temporarily or for two months after a request from MPs.

The layoff notices received by workers on Friday were nearly the same as those received in the initial round of the cuts by Kennedy, whose layoffs initially said their duties “had been identified as unnecessary or actually responsibilities performed elsewhere in the agency.”

The main difference from Friday's layoff notices is the date they take effect: they are going to take leave until July 2 formally separate from the service, not June.

The layoffs also ceased work at the institution's National Personal Protection Technology Laboratory. This NIOSH department is a government agency responsible for reviewing safety equipment such as N95 masks and respiratory equipment used by emergency workers.

An ruling official said the lab’s respirator approval plan is already processing about 100 applications for personal protective equipment.

The stagnant work includes changes needed to meet the new standards released by the National Fire Protection Association this year. Currently, there are no equipment that meets these standards, and the agency cannot refund the application fee paid by the manufacturer.

Officials said efforts to discover and warn of forged personal protective equipment were also stopped due to the layoffs.

"Millions of workers in various departments, including health care, construction and emergency services, rely on NIOSH-approved respirators. Without these approvals, their safety can be compromised, leading to underlying illness, injury and even death."

It is not clear what will happen to the agency’s work, as most of its teams have been eliminated. HHS did not immediately respond to a request for comment.