The reason I asked about Shabbos was because I had noticed that people seem to be more OK with breaking shomer nagia for medical reasons than they are about breaking Shabbos. You cleared that up. I didn’t realize there was a legitimate halachic reason for that trend.
Still begs the question of why it doesn’t apply in other situations where the mental involvement in the job would [theoretically] prevent those thoughts. Eg. barbers, shaking hands at interviews, etc.