It's the Job

Two friends met after not seeing each other for a couple of months. Bill: "Jack, you look like you not doing well?" Jack (swiping the sweat off his brow): "I ain't been ill. It's the work doing me in. Working from seven in the morning till six at night. Only one hour for a break. Think of it. Very taxing on ones body." Bill: "Wow, and how long has this been going on? How long you been working for that company?" Jack: "Oh, I haven't been there yet. I begin tomorrow," he added gloomily.