A workforce fit and willing (8)
I believe the answer is:
amenable
'willing' is the definition.
('amenable' can be a synonym of 'willing')
'a workforce fit' is the wordplay.
'workforce' becomes 'men'.
'fit' becomes 'able' ('able' can be similar in meaning to 'fit').
'a'+'men'+'able'='AMENABLE'
'and' is the link.
(Other definitions for amenable that I've seen before include "Ready to accept" , "Willing to yield or be influenced" , "Pliant" , "Open to suggestions" , "Flexible, agreeable" .)