Worked a month over Xmas Holidays at end of Grade X. Interesting experience, learning to deal with very different personalities', compared to other kids'.
Started work at end of Grade XII, as Receptioniste at Children's Hospital. That was for only a month pre-designated. Then did three Receptionist/Typing jobs, for a few months' until called for an I/V with Company I had applied to five months' before I finished School. This was THE job I wanted. Got called in for a 2nd I/V, at which time was advised I 'had the job'. Totally thrilled, & ended up working for THAT Company a total of 35 years!
I was extremely fortunate in that I knew what job I wanted, since end of Grade XI, went after it, & got it!