Staff returning late after vacation is worthy of comment (7)
I believe the answer is:
notable
'worthy of comment' is the definition.
'notable' can be an answer for 'worthy' (I've seen this before). I am not sure about the 'of comment' bit.
'staff returning late after vacation' is the wordplay.
'staff' becomes 'baton' (I've seen this before).
'returning' shows that the letters should be reversed in order.
'after vacation' means to remove the middle letters (the inside letters must vacate).
'late' with its centre taken out is 'le'.
'baton' backwards is 'notab'.
'notab'+'le'='NOTABLE'
'is' is the link.
Can you help me to learn more?
(Other definitions for notable that I've seen before include "Famous or memorable" , "Widely known and esteemed" , "Worthy of remark" , "Impressive" , "Eminent" .)