People who never have a weekend out! (3)
I believe the answer is:
kin
'people' is the definition.
(I've seen this in other clues)
'never have a weekend out' is the wordplay.
I cannot really see how this works, but
'weekend' could be 'k' (I've seen this in other clues) and 'k' is located in the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'who' acts as a link.
Can you help me to learn more?
(Other definitions for kin that I've seen before include "Relations, go with kith" , "Relatives, family" , "Relatives from Kinnegad" , "A person's relatives, goes with kith" , "One's family/relations" .)