I’m the only one wearing a facemask.....

So I’m currently at work (today’s my first day) and I’m literally the ONLY one wearing a facemask. I don’t understand how I’m the only one wearing a facemask when I just heard 3 other employees cough their lungs out. We do get temperature checked and have to fill out a paper before we enter but do these people really think they’re gonna be honest and write down that they have symptoms??? THEY WONT.

We also work in a medical company assembling life saving devices so I seriously don’t understand how a mask isn’t a requirement and I’m definitely not taking my mask off anytime soon.