Fearsome employer (4)
I believe the answer is:
ogre
'fearsome employer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ogre that I've seen before include "character in 'Puss in Boots'" , "Grim(m) beast?" , "terrible person" , "stern one who inspires fear" , "Ugly giant" .)