go to work

Short definition from Wiktionary

Verb

1. 1
   Used other than figuratively or idiomatically: see go, to, work. (This sense is a translation hub.)
2. 2
   To begin performing some task or work.
3. 3
   To go to one's job, as by commuting.
4. 4
   To beat up, to batter.
5. 5
   To go to town.