Tease Ben, perhaps a shirker? (8)
I believe the answer is:
absentee
'a shirker?' is the definition.
(I've seen this before)
'tease ben perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'tease'+'ben'='teaseben'
'teaseben' with letters rearranged gives 'ABSENTEE'.
(Other definitions for absentee that I've seen before include "to prompt a hearty increase in affection!" , "Person who should be present but isn't" , "one's failed to show up" , "One away from work, etc" , "Deserter - truant b" .)