Woman keeps extremely old-school forest worker (8)
I believe the answer is:
woodsman
'forest worker' is the definition.
'woodsman' can be an answer for 'worker' (woodsman is a kind of worker). I'm not sure about the 'forest' bit.
'woman keeps extremely old-school' is the wordplay.
'keeps' is an insertion indicator (inserted letters are kept inside).
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'school' becomes 'S'.
'old' with its middle taken out is 'od'.
'od'+'s'='ods'
'woman' placed around 'ods' is 'WOODSMAN'.
Can you help me to learn more?
(Other definitions for woodsman that I've seen before include "elder worker, perhaps?" , "He lives in the forest" , "outdoorsy type" .)