Third-person singular simple present indicative form of throw a spanner in the works

(dated, simile) To work very hard.

Third-person singular simple present indicative form of make short work of

simple past tense and past participle of make short work of

present participle of make short work of

Third-person singular simple present indicative form of work like a dream

(simile) To work very hard; to toil.

simple past tense and past participle of work like a dream

Work product, as a presentation of a solution to a problem, produced without input from one's superior, other than possibly setting the problem, that is complete to the point of only needing approval or disapproval from one's superior or other decision-makers.

Third-person singular simple present indicative form of work like a mule