1. not paid, done, or returned by the required or expected time
2. having been expected or needed for a long time

Examples

• The library book is three weeks overdue.
• My rent payment is overdue by five days.
• The project report was overdue last Friday.
• She received a notice about her overdue credit card bill.
• The reforms are long overdue and desperately needed.
• An overdue apology finally came after months of silence.
• The overdue recognition of her achievements was well deserved.