My first real job was repairing and cleaning home heating systems. I learned that in HS and if you got a job related to your trade you could work your "shop" week at your job. The pay was great for a HS senior but the hours and my boss sucked. I ran figure 8 cars on Saturday night and our agreement was that was the only night I didn't want to be on call. Well, he would page me darn near every Saturday night and yell at me every time for not responding. When his daughter took an interest in me he fired me for a customer compliant.