Maybe there is something holding them back? Despite appearances, a lack of work on site is not generally because workers just decided not to show up. Usually there is an underlying issue - ie change orders, financing, lack of predecessor progress, material shortage etc.
If this site hasn't progresed much in a month, I doubt the reason is that the rodmen decided to take summer vacation.
Given that Toronto Hydro is involved ... well, I'm more inclined to believe that they are the cause of the delay, as opposed to the rodmen.