Dancer's partner is a present-day worker? (8)

I believe the answer is:

reindeer

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'dancer's' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for reindeer that I've seen before include "Beasts of the Arctic" , "Sleigh-puller" , "Arctic animal with large antlers" , "wild animal" , "Rudolph, for instance" .)

I've seen this clue in the Irish Times (Crosaire) and The Irish Times.

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