Supplier of food and drink mostly consumed by home worker (7)
I believe the answer is:
caterer
'supplier of food' is the definition.
(I've seen this before)
'drink mostly consumed by home worker' is the wordplay.
'drink' becomes 'tea' (tea is a drink).
'mostly' means to remove the last letter (most but not all of the word).
'consumed by' means one lot of letters goes inside another (inserted letters get consumed).
'home worker' becomes 'carer' (someone who provides care in the home).
'tea' with its final letter taken off is 'te'.
'te' placed into 'carer' is 'CATERER'.
'and' is the link.
(Other definitions for caterer that I've seen before include "Provider of food and drinks" , "One supplying needs" , "Purveyor" , "One supplying cheer" , "Person who supplies food for social events" .)