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'.
(..) No, no. I'm just so glad to hear that everybody's fine. That's wonderful. Gretchen, I'm so very, very long overdue in telling you this... ...and I have to take Walt at his word that he's been passing it along for me. I mean, he's been so adamant... ...about wanting to handle this (..)2009 TvShow: Breaking Bad Title: Peekaboo Season: 2 Episode 6