(CBS DETROIT) – More airlines are jumping on board with vaccine mandates to help fight the spread of COVID-19.

United and Frontier Airlines will require employees to be fully vaccinated if they want to work.

READ MORE: U Of M Establishes New Sexual Misconduct Policy For Employees, Students

United is the first major airline to make the move, giving employees a deadline of late October to get a shot.

READ MORE: AG Nessel Reissues Consumer Alerts Amid Flooding, Power Outages In Michigan

Frontier wants all of its employees vaccinated by October 1.

MORE NEWS: 17-Year-Old Charged In Non-Fatal Shooting In Detroit

© 2021 CBS Broadcasting Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.