Try hard to get free labour (8)
I believe the answer is:
struggle
This might be a double definition.
'try hard' is the first definition.
'free labour' is the second definition.
'struggle' can be an answer for 'labour' (I've seen this before). I'm not sure about the 'free' bit.
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for struggle that I've seen before include "Vigorously resist" , "Conflict involving effort" , "Strenuous effort against odds" , "Vie" , "Make strenuous efforts to overcome" .)