Telling Your Employer You're Pregnant: Timing and Your Rights

There's no legal requirement to tell your employer the moment you find out you're pregnant, and many people choose to wait until after the first trimester or the 12-week scan for personal reasons. But there is a legal deadline, and specific rights that only become active once you've told them — worth understanding both before deciding your own timing.

The legal deadline: by the 15th week before your due date

By UK law, you must tell your employer you're pregnant by the 15th week before your expected week of childbirth at the latest, if you want to take maternity leave and receive Statutory Maternity Pay. In practice, most people tell their employer earlier than this deadline requires, but it's useful to know the actual legal floor rather than feeling pressured to disclose earlier than you're comfortable with.

Rights that start once you've told your employer

• Paid time off for antenatal appointments — you're entitled to reasonable paid time off for antenatal care, including appointments recommended by a GP, midwife or health visitor, not just scans.
• A workplace risk assessment — your employer must carry out a specific risk assessment covering your role once informed, addressing things like heavy lifting, standing for long periods, exposure to harmful substances, or excessive workplace stress, and make reasonable adjustments if risks are identified.
• Protection from unfair treatment or dismissal — it's unlawful to treat you unfairly or dismiss you because of pregnancy, and this protection continues through maternity leave and for a period afterwards.

What "reasonable time off" actually covers

This includes the appointments themselves, plus reasonable travel time — it isn't limited to one or two scans. Antenatal classes recommended by a healthcare professional are also generally covered, though your employer can ask for appointment confirmation (though not necessarily detailed medical information) for appointments after the first one.

If you're self-employed or on a zero-hours contract

Rights differ from standard employee rights — self-employed people generally aren't entitled to the same paid time off but may be eligible for Maternity Allowance instead of Statutory Maternity Pay. Zero-hours and agency workers still have some protections against unfair treatment, though the specifics depend on your exact working arrangement — worth checking gov.uk's guidance or speaking to Acas for your specific situation.

Choosing your own timing, within the legal deadline

Common reasons for waiting until after 12 weeks include miscarriage risk being highest in the first trimester, and simply wanting to process the news privately first. There's no requirement to justify your timing to your employer as long as you disclose by the legal deadline — the choice of when, within that window, is entirely yours.