In action working, he got to work (2,3,2)
I believe the answer is:
on the go
'in action' is the definition.
'working he got to work' is the wordplay.
'working' becomes 'on'.
'to work' indicates anagramming the letters.
'he'+'got'='hegot'
'hegot' is an anagram of 'thego'.
'on'+'thego'='ON THE GO'
(Other definitions for on the go that I've seen before include "Ever busy" , "Active and energetic" , "Very active (colloq.)" , "Moving -- active" , "ready to start monopoly?" .)