To apply for State Disability Insurance (SDI) you will need to provide a certification form your healthcare provider. To apply for Paid Family Leave (PFL) to care for a seriously ill family member, you will need to submit a medical certification from your family member’s healthcare provider. To apply for PFL to bond with a new child, you will need to submit evidence of your relationship with the child, such as a birth or adoption certificate. If you took State Disability Insurance for your pregnancy, you do not have to submit proof of relationship with your child. See sample claim form here: http://www.edd.ca.gov/pdf_pub_ctr/de2501f-sample.pdf.