David Lean's not working (4)

I believe the answer is:

idle

I'm a little stuck... Click here to teach me more about this clue!

'not working' is the definition.
(I've seen this in another clue)

'david lean's' is the wordplay.
'IDLE' is hidden within the letters.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for idle that I've seen before include "no longer employed?" , "Not active or at work" , "Not busy" , "Lied about being lazy or not working" , "Workshy" .)

I've seen this clue in The Sun.

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