The center manager mentioned the light day and the rules in the morning.
They offered everyone more work if they wanted it.
You chose to come in early and try to get away with some free cash.
If you grieve it, you have a 50/50 chance, but there will be repercussions.
The 8 hour day in the contract is to reference the minimum requirements of what a full time job is suppose to be.
Filing a grievance when you were smiling ear to ear on having an easy day is hypocritical.
2 things that piss off your center manager : drivers who work way more OT than they're suppose to and giving away money that was unearned.
Remember that these kind of grievances are the reasons why UPS cuts out so many routes and not give easy days anymore