My father in law was a linesman for AT&T, then the various Bell companies then Verizon for 30 years. He started when he was 21 and retired when he was 51 about 15 years ago.
He regularly brags how the union would set hour allotments for each job and how he could complete work in 30 minutes that the union required scheduling for 5 hours. Most of the time he spent on the clock involved him hiding his work truck in the woods behind his house and sneaking into his house to work on home improvements while he was being paid.
Every once in a while he would get caught doing something wrong and would be suspended. The union would then represent him and provide him groceries and other items during the suspension. Eventually Verizon paid him a lump sum of a quarter million dollars to go away which along with saving money from decades of generous overtime rules including double time and a half on holidays let him retire at the age of 51.