His promotion is long 'overdue'. = He is long 'overdue' for a promotion. [=he should have been given a promotion by now]
Her baby is 'overdue' by one week. [=her baby has not been born yet and it is a week since its birth was expected]
She reminded him that the rent was 'overdue'.
(..) - Don't feel it. Don't let it show. Do you want to build a snowman? Or ride our bike around the hall? I think some company is overdue... I've started talking to the pictures on the walls. Hang in there, Joan. It gets a little lonely all these empty rooms. Just watching the hours tick by. (..)2013 Frozen