Inventor failing to maintain staff living conditions (11)
I believe the answer is:
environment
'living conditions' is the definition.
(area or conditions one lives in)
'inventor failing to maintain staff' is the wordplay.
I cannot really see how this works, but
'staff' could be 'men' (I've seen this in other clues) and 'men' is located in the answer.
an anagram of 'inventor' is 'environt' which is present in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
(Other definitions for environment that I've seen before include "Natural world; surroundings" , "External surroundings" .)