Note lifted from employment cases (4)
I believe the answer is:
memo
'note' is the definition.
(I know that memo is a type of note)
'lifted from employment cases' is the wordplay.
'lifted' says the letters should be written in reverse (going up in down clue).
'cases' indicates the answer is hidden within the clue.
'omem' can be found hidden inside 'from employment'.
'omem' in reverse letter order is 'MEMO'.
(Other definitions for memo that I've seen before include "Short note or message" , "A little something to be remembered" , "Office note" , "Written business message, in short" , "A brief record of events" .)