The most common and most likely answer to this crossword clue is the 5 letter word CARER
I've seen this crossword clue in Financial Times
C
A
R
E
R
More clues leading to the result CARER
- Nurse in working life losing some energy
- Elderly assistant perhaps about to enter saloon?
- Lose energy from calling nurse
- . European sacked in job tender
- One who tends to precede Brenda with “banger”
- End of life wasted in calling for nurse
- Rush with energy once depleted to get aid for the vulnerable
- One who tends to rush half- heartedly
- Nurse’s CV doesn’t cover athlete’s foot
- One European sacked from job as health worker
Buddy explains!

The straight part
We know that "Nurse" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nurse = carer.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CARER mean?
CARER noun- Someone who regularly looks after another person, either as a job or often through family responsibilities.