Who wants to bet that the first words out of the on cars mouth during the PCM were hours only?
Lol come on Dave. So if my on car told me I had to be done by 3pm during the week I'd have to magically make it happen.
He can say whatever he wants but if we are told to come because it's mandatory its 8 hr guarantee. If they say the day before it's voluntary. Then they can say it's hours worked unless you ask for 8 the day before.
Before you freak out, yes you should alert them you want 8 if you will be done in 4 or 5. If you don't a grievance may be difficult.