Crossword Puzzle Plumbers' job?

Clue: Plumbers' job?

Jobs for plumbers (DRIPS with 5 letters)
Car that "beats the gassers and the rail jobs" in a 1964 hit (GTO with 3 letters)
Steve Jobs, for example (INNOVATOR with 9 letters)
Length of some contracted jobs (DAY with 3 letters)
Dead-end jobs (RUTS with 4 letters)
Tugboat jobs (TOWS with 4 letters)
Jobs and Wozniak start-up (APPLE with 5 letters)
Like many student jobs (PARTTIME with 8 letters)
Jobs in the computer biz (STEVE with 5 letters)
39th V.P. (AGNEW with 5 letters)