Tramp and care worker taking back boxes (4)
I believe the answer is:
trek
'tramp' is the definition.
(I've seen this before)
'care worker taking back boxes' is the wordplay.
'boxes' indicates a hidden word (to box can mean to contain).
'back' says the letters should be written in reverse.
'kert' can be found hidden inside 'care worker taking'.
'kert' back-to-front is 'TREK'.
'and' acts as a link.
(Other definitions for trek that I've seen before include "A long hard march" , "A long arduous journey as in S Africa" , "Long hard journey on foot" , "A long arduous walk" , "A long arduous march" .)