Job queen performed dutifully at first (6)

I believe the answer is:

errand

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'job' is the definition.
(thesaurus)

'queen performed dutifully at first' is the wordplay.
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'performed' becomes 'ran' (I am not sure about this - if you are sure you should believe this answer much more).
'at first' says to take the initial letters.
The first letter of 'dutifully' is 'd'.
'er'+'ran'+'d'='ERRAND'

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(Other definitions for errand that I've seen before include "Short assignment" , "short shopping trip" , "Native of a former German kingdom" , "Short journey to get or carry message" , "Messenger's job" .)

I've seen this clue in The Times.

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