Not working on stories, so rests (4,4)
I believe the answer is:
lies down
'rests' is the definition.
(I've seen this in another clue)
'not working on stories' is the wordplay.
'not working' becomes 'down' (down can mean broken or not working).
'on' means one lot of letters go next to another.
'stories' becomes 'lies' (to tell stories can mean to lie).
'down' put after 'lies' is 'LIES DOWN'.
'so' acts as a link.
(Other definitions for lies down that I've seen before include "Relaxes" , "given evidence veracity levels are rising?" .)