Mournful work (5)
I believe the answer is:
elegy
'mournful work' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elegy that I've seen before include "that may be on the dead" , "Poem for the departed" , "Poem penned beside church" , "Poem as Gray's in churchyard" , "Mournful work" .)