Take in a group of workers breaking record (3,2)
I believe the answer is:
eat up
'take in' is the definition.
(thesaurus)
'a group of workers breaking record' is the wordplay.
'group of workers' becomes 'TU' (Trade Union).
'breaking' indicates putting letters inside.
'record' becomes 'EP' (abbreviation for extended play record).
'a'+'tu'='atu'
'atu' going into 'ep' is 'EAT UP'.
(Other definitions for eat up that I've seen before include "Exhaust" , "43 [TUCK] in" , "Consume completely" , "show good appetite" , "Finish one's food" .)