Occupation of the chap who pays the rent (7)
I believe the answer is:
tenancy
'occupation' is the definition.
(I've seen this before)
'the chap who pays the rent' is the wordplay.
I cannot really understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'chap' could be 'cy' and 'cy' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'of' acts as a link.
Can you help me to learn more?
(Other definitions for tenancy that I've seen before include "Letting arrangement" , "Property agreement" , "Occupation of lands or houses for rent" , "Let" , "Renting arrangement" .)