We don't believe volunteers rejected jobs (8)

I believe the answer is:

atheists

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'we don't believe' is the definition.
I can't judge whether this defines the answer.

'volunteers rejected jobs' is the wordplay.
'volunteers' becomes 'TA' (abbreviation for Territorial Army).
'rejected' shows that the letters should be reversed in order.
'jobs' becomes 'heists' (I can't justify this - if you can you should give a lot more credence to this answer).
'ta' in reverse letter order is 'at'.
'at'+'heists'='ATHEISTS'

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(Other definitions for atheists that I've seen before include "They do not believe in the existance of a God" , "Disbelievers in god" , "They believe deities don't exist" , "They deny the existence of gods" , "`Tis as the ones who don't believe in a god" .)

I've seen this clue in The Times.

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