spadeworker means one who does spadework, now especially in the figurative sense of preparatory work.
Etymology
From spadework + -er or spade + worker.
noun
- One who does spadework, now especially in the figurative sense of preparatory work.“Like master like man. The peasants and artisans follow their neighbors; the spade-workers voting with Bismarck and Falkenstein, the hand-workers with Jacoby and Rosenkranz.”