Worker using kitchen roller about to leave (5)

I believe the answer is:

baker

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'worker' is the definition.
(baker is a kind of worker)

I cannot understand how the rest of the clue works.

(Other definitions for baker that I've seen before include "one with lots of dough" , "job" , "Bread and cakes maker" , "Producer of bread/cakes" , "Bread producer" .)

I've seen this clue in The Guardian.

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