Worker occasionally draws injured people (10)
I believe the answer is:
casualties
'injured people' is the definition.
(I've seen this before)
'worker occasionally draws' is the wordplay.
'worker occasionally' becomes 'casual' (a casual worker works from time to time).
'draws' becomes 'ties' ('tie' can be a synonym of 'draw').
'casual'+'ties'='CASUALTIES'
(Other definitions for casualties that I've seen before include "Victims" , "Injured people" .)