Its in the tag VW Golf. I wonder if the mechanic would have said your car must be aligned after this work and I must add $82.00 to the repair would the OP be writing and asking if it was necessary.
Now since the mechanic did not say anything about a needed alignment he must do it for free. Why did this mechanic not require his customer allow him to align the car (for a reduced charge include in the bearing work) this would have been the smart thing. Its not like the mechanic messed up the bearing job its just that he wanted to keep the bill down.