Hospital job for cat lacking initial accommodation (7)
I believe the answer is:
housing
'accommodation' is the definition.
(thesaurus)
'hospital job for cat lacking initial' is the wordplay.
'hospital' becomes 'h'.
'job for cat' becomes 'mousing' (mousers are cats who hunt mice).
'lacking initial' means to remove the first letter.
'mousing' with its initial letter removed is 'ousing'.
'h'+'ousing'='HOUSING'
(Other definitions for housing that I've seen before include "saddlecloth" , "Accommodating" , "enclosure" , "Accommodation" .)