Gov. Ned Lamont reported that an estimated 1,200 state employees are still on the job despite not being in compliance with the state vaccination mandate.

The governor says supervisors are reaching out to the roughly 4% of executive branch employees to make sure there aren't any paperwork issues standing between them and compliance.

The governor says 78% of executive branch employees are now fully vaccinated and 18% have agreed to weekly testing.

However, union leaders say the mandate is putting a strain on an already thinned-out workforce.

"A lot of times, they're working 16-hour days, three or four days in a row with minimal sleep in between, and this is affecting patient care and patient safety,” says Trung Le, a registered nurse and former employee of UConn Health. “So, imagine having your loved ones being taken care of with minimal staff."

Lamont announced Monday that the National Guard would not be called in to fill in for employees placed on unpaid leave.