My boss wants me to apologize to my coworkers because I called out of work today.

I work a blue collar job. The bosses are a bit old school but the job is relatively easy. I called out of work today due to body aches from yesterdays worksite at some JR station (Was changing out ceiling filters and contorted my body the wrong way/had to use the ladder with no shoes in some rooms.)

Today we were doing window cleaning at this one building in Tokyo. Keep in mind I havent called out in months. He wants me to email all the coworkers who worked today and apologize for my absence for having to work harder in the heat.

"今日も猛暑の中、1名少なく頑張った他メンバーにゴメンナサイのメールを送っておきな!皆、懸命に1名減をカバーしてたぞ。"

Like I get it but at the same time it's not my fault work becomes harder when 1 person is missing and it's not like I can read the future and let them know preemptively when I will not be there.

If we are always short staffed then I am unable to utilize PTO properly too. I know its best to just comply but legally they can't fire me for not apologizing right?

by Andrew118