Ground workers get time as a retribution for indiscipline (10)
I believe the answer is:
punishment
'a retribution for indiscipline' is the definition.
I can't judge whether this defines the answer.
'ground workers get time' is the wordplay.
'ground' becomes 'punish' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'workers' becomes 'men' (man is a kind of worker).
'get' means one lot of letters go next to another.
'time' becomes 't'.
'punish'+'men'+'t'='PUNISHMENT'
'as' is the link.
Can you help me to learn more?
(Other definitions for punishment that I've seen before include "Beating" , "See 6" , "Sanction" , "Discipline" , "That may be fine" .)