You must provide a legal document (marriage certificate, etc.) for proof of name change.
If you receive Welfare Fund benefits, you should fill out the fill out the Welfare Fund’s Change of Status Form on the UFT website to change your name. If you need further assistance, contact the Welfare Fund at 212-539-0500.
If you don’t receive Welfare Fund benefits (you are a per diem or a paraprofessional sub, for example), you should contact the UFT Membership Department at 212-539-0500 or membership [at] uft [dot] org (membership[at]uft[dot]org) to change your name.