The most common and most likely answer to this crossword clue is the 7 letter word RETRAIN
I've seen this crossword clue in The Guardian
R
E
T
R
A
I
N
More clues leading to the result RETRAIN
- Concerned with rail service, prepare to change line?
- Coach again is wet with downpour, perhaps
- Learn something new about coach
- Learn new skills as son getting out of control
- Retiring Queen and followers prepare for alternative employment
- Retired queen and retinue prepare for new job
- Check if son is off school again
- Be an employer, embracing right to teach new skills
- After vessel leaves return drops – learn new skills
- Gain new skills on public transport
Buddy explains!

The straight part
We know that "prepare for alternative employment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case prepare for alternative employment = retrain.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 RETRAIN mean?
RETRAIN verb- To train again; especially, to train or study in a new subject or job