A bit delayed, but...
I've been working (officially) since I was 14 (32 now)... mowing lawns for my old church doesn't really count.
First job was working over the summer assisting the janitor of my junior high to prep the school for the upcoming year (strip and wax floors, paint, deep clean everything, destroy walls/partitions, mowing)
Junior and Senior year of high school, I worked at Hardees (started in kitchen, learned front, got promoted to crew trainer). They offered me a manager position on the eve of leaving for college...sad thing is, I would have made more there than I currently am making as a postdoc... haha! I also had a position at city hall working in the city managers office as a clerk, receptionist, assistant (jack of all trades). My senior year of high school, I was working 60 hour weeks between the two jobs, playing competitive hockey, and still in several AP high school classes... where the hell has that energy gone????
As a freshman in college, I started working in the Chemistry stockroom. The next year and subsequent years were working in various research labs and as a teaching assistant. Grad school was a job in itself (we got paid, albeit a mere pittance). Postdoc is better, but still not anywhere close to what my education should dictate! Haha! I guess it's for fun, not money.
Kind of long, but I like my jobs.