Missing the deadline (5)
(Other definitions for tardy that I've seen before include "Backward" , "Late - slow" , "Unpunctual" , "Rather late" , "Behindhand" .)
(Other definitions for overdue that I've seen before include "Remaining unpaid after the scheduled time" , "Belated" , "Past the expected time of arrival" , "Do revue after the appointed time" , "Past the appointed date for payment" .)