There’s a form SC3 on the Gov website, they don’t need proof x

My partner just told his boss the due date and he got 4 weeks off. 2 weeks from paternity and 2 weeks from his holidays! His boss didn’t ask for any proof as I guess it’s something you wouldn’t lie about! But maybe that’s cause his been working there a while. If they do need proof any hospital letters or midwife letters stating baby’s due date will be fine. Hope that helps x