Their job may be to correct abuse of steroid (7)
I believe the answer is:
editors
'their job may be to correct abuse' is the definition.
I can't tell whether this defines the answer.
'of steroid' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'steroid' with letters rearranged gives 'EDITORS'.
Can you help me to learn more?
(Other definitions for editors that I've seen before include "Newspaper bosses" , "Newspaper heads" , "Employees on paper" , "Senior journalists" , "Press employees" .)