I have a condo unit that is tied into the doctors ...

I have a condo unit that is tied into the doctors office below. I need the water shut off to do some plumbing. In the past the association would pay the overtime due to the unique plumbing on my unit. PMP Management has decided on their own that now units such as mine have to pay the overtime for the plumbing to be done at night so the businesses below will not be inconvenienced.
I feel their change of accepted business practices is not a good way to treat their customers.