Good space for stable employee (5)
I believe the answer is:
groom
'stable employee' is the definition.
(I've seen this in another clue)
'good space' is the wordplay.
'good' becomes 'g' (abbreviation).
'space' becomes 'room' (enough space or room to do something).
'g'+'room'='GROOM'
'for' is the link.
(Other definitions for groom that I've seen before include "royal attendant" , "He's about to be married - tidy him up" , "One at wedding" , "Smarten" , "Officer of Royal Household" .)