Be suspended and delay the sack? (4,2)
I believe the answer is:
stay up
I believe this clue is a double definition.
'be suspended' is the first definition.
(eg something suspended in the air stays up)
'delay the sack?' is the second definition.
(hitting the sack means going to bed)
'and' acts as a link.
(Other definitions for stay up that I've seen before include "postpone retirement" , "Decide not to retire" , "Don't go to bed - don't be relegated" , "Keep late hours; avoid relegation" , "Don't retire" .)