Time off that is left over? Yes (7)
I believe the answer is:
leisure
'time off' is the definition.
(I've seen this before)
'that is left over? yes' is the wordplay.
'that is' becomes 'ie' ('i.e.' can be a synonym of 'that is').
'left' becomes 'l' (common abbreviation).
'over?' says the letters should be written in reverse (I've seen 'over ' mean this).
'yes' becomes 'sure' (I've seen this in other clues).
'ie'+'l'='iel'
'iel' back-to-front is 'lei'.
'lei'+'sure'='LEISURE'
(Other definitions for leisure that I've seen before include "State of rest or repose" , "Spare time" , "Time for relaxing" , "Rue lies about rest period" , "Recreation time" .)