Present workpeople don't indulge in this (11)
I believe the answer is:
absenteeism
'present workpeople don't indulge in this' is the definition.
The definition suggests a singular noun which matches the answer.
This is the entire clue.
Can you help me to learn more?
(Other definitions for absenteeism that I've seen before include "Regular failure to turn up for work" , "Bunking off work" , "not attending properly" , "Truancy" , "Practice of often staying away from work" .)