Praise notice to turn behind schedule (7)
I believe the answer is:
adulate
'praise' is the definition.
(adulation is praise)
'notice to turn behind schedule' is the wordplay.
'notice' becomes 'ad' (both can mean an advertisement).
'to turn' becomes 'U' (a 'U-turn' is a kind of turn).
'behind schedule' becomes 'late' (running late).
'ad'+'u'+'late'='ADULATE'
(Other definitions for adulate that I've seen before include "Excessively admire" , "Praise obsequiously" , "Praise excessively" , "Rave over" , "Flatter obsequiously" .)