Special reforms, including work of bishops (9)
I believe the answer is:
episcopal
'of bishops' is the definition.
(I've seen this before)
'special reforms including work' is the wordplay.
'reforms' is an anagram indicator.
'including' is an insertion indicator.
'work' becomes 'op' (abbreviation for opus).
'special' is an anagram of 'episcal'.
'episcal' placed around 'op' is 'EPISCOPAL'.
(Other definitions for episcopal that I've seen before include "Alice's pop? (anag)" , "sees can be described thus" , "work of bencher" , "Governed by bishops" , "Scottish Church" .)