In Germany its way easier: You just gotta have some sort of asthma (maybe even other respiratory diseases qualify for this, idk). Then you can get a certificate to not wear a mask.

But i do it anyway most of the times because my mask looks nice, i don't wanna offend any sheeple and i'm bored by the discussions about it.

I even started wearing different handmade masks fitting my mood and style of the day.

On construction sites nobody gives a shit as long as no controlling instance is nearby and the fences around it are high enough. We are sweating there like elks in this time of the year almost all of the time so why just accept another bullshit handicap ? It is an unwritten law there to not hassle somebody else doing their job as long as you don't have to.