Health worker, poorly insured, firm admitted (8,5)

I believe the answer is:

district nurse

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'health worker' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for district nurse that I've seen before include "care provider" , "One treating patients in their homes" , "Itinerant local health worker" , "Local medical worker" , "One tending patients in their homes" .)

I've seen this clue in The Times.

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