This Practice Note examines the rights of workers undergoing fertility treatment, including an explanation of the types of fertility treatment available (eg in vitro fertilisation (IVF), intra uterine insemination (IUI), medication and surgery), how employers should treat requests for time off, at what stage the protected period is triggered in respect of pregnancy rights, protection from discrimination, what employers should think about when considering implementing a policy, the latest guidance, current case law and proposals for change.