Lazy head results in unemployment (8)
I believe the answer is:
idleness
'unemployment' is the definition.
(thesaurus)
'lazy head' is the wordplay.
'lazy' becomes 'idle' ('idle' can be similar in meaning to 'lazy'**).
'head' becomes 'ness' (ness is a headland).
'idle'+'ness'='IDLENESS'
'results in' is the link.
(Other definitions for idleness that I've seen before include "Lack of activity" , "State of doing nothing" , "Lazy behaviour" , "Send lies (anag.)" , "not working" .)