Pros
The nice thing about working as a Utility Locator is that you can work independently. I used to start working at about 6am, and would stop working in the late afternoon.
Cons
Most locators are required to be on call for a week around once a month. The on call work can be brutal at times. When on call at night, you are still required to cover your daytime shifts. If you are in a busy area, this might mean working 16 to 18 hours in a row, with only a few hours of sleep before covering your normal shift the next morning.