Get nurse to take a breather in the end (4)
I believe the answer is:
earn
'get' is the definition.
(I know that earn is a more specific form of the action get)
'nurse to take a breather in the end' is the wordplay.
'nurse' becomes 'en' (abbreviation for state-enrolled nurse).
'to take' means one lot of letters goes inside another (inserted letters are taken in).
'in the end' indicates one should take the final letters.
The last letter of 'breather' is 'r'.
'a'+'r'='ar'
'en' placed around 'ar' is 'EARN'.
(Other definitions for earn that I've seen before include "net" , "Acquire by ones' effort" , "Gain by work or effort" , "Deserve, gain" , "Acquire through merit" .)