Facing work pressure over location (8)

I believe the answer is:

opposite

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

'work pressure over location' is the wordplay.
'work' becomes 'op' (common abbreviation for 'opus').
'pressure over' becomes 'po' (this might be a standard abbreviation which I don't know about).
'location' becomes 'site' (site is a kind of location).
'op'+'po'+'site'='OPPOSITE'

Can you help me to learn more?

(Other definitions for opposite that I've seen before include "across the road?" , "Directly facing each other" , "Rival" , "Contrary or face-to-face" , "Contrary, antipode" .)

I've seen this clue in The Telegraph.

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