We get pull pension credit for one punch a week.
Our local used to have language that you had to average 32 hours a week over a 3 month period to have healthcare.
3 months = 13 weeks = 416 hours
Theoretically, you could take 13 unpaid days off over a 3 month period and still keep healthcare.
"RLO's" were through the roof so our BA changed it to 40 hours a week
3 months = 13 weeks = 520 hours
So now, you can not take more than 5 unpaid days off in 3 months or you'll lose health coverage.
That has forced drivers to use their paid days and unpaid days off wisely.
Our BA accomplished his goal.