The most common and most likely answer to this crossword clue is the 12 letter word CHIROPRACTOR
I've seen this crossword clue in The Times
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More clues leading to the result CHIROPRACTOR
Buddy explains!
The straight part
We know that "Specialist who wants to get back to work" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case specialist who wants to get back to work = chiropractor.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 CHIROPRACTOR mean?
CHIROPRACTOR noun- A health-care practitioner who specializes in chiropractic, the hands on or hand-held instrumental movement of the bone structure of the body to improve the function of the joints or nervous system.