When I was 14 I worked as a drummer in local clubs - my 1st payed employment.
I worked Friday, Saturday & Sunday nights, and earned £40 a week.
I've just searched here, and found that £40 back then (1976) is equivalent to about £250 to £330 at 2007 value. That's about £30 an hour.
So I was earning about £300 a week while still at Jr High school. Never realised.
Of course, a combination of supporting my older brother through medical school and then paying my way through universities, (and booze and gurlies) meant that it all got spended, but sheesh.
After I became successful in music I got closer to 'the music business' and further away from music, so I walked. After that my earnings went back to mundane average levels.
What was your 1st paycheck?