Pursue payment (4)
I believe the answer is:
wage
I believe this is a double definition.
'pursue' is the first definition.
(I've seen this before)
'payment' is the second definition.
(I know that wage is a type of regular payment)
(Other definitions for wage that I've seen before include "Carry on - remuneration" , "Salary" , "practise" , "Regular pay" , "Money earned" .)