Stable employee stole pants put on queen (6)
I believe the answer is:
ostler
'stable employee' is the definition.
(I've seen this in another clue)
'stole pants put on queen' is the wordplay.
'pants' indicates anagramming the letters (UK informal term for 'nonsense' or 'rubbish').
'put on' means one lot of letters go next to another.
'queen' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'stole' is an anagram of 'ostle'.
'ostle'+'r'='OSTLER'
(Other definitions for ostler that I've seen before include "Inn's stableman, of old" , "Horse attendant" , "Inn's carer for horses" , "ER lost (anag) - former stableman" , "Horseman at the inn of old" .)