Currently, thirteen states have a Paid Family and Medical Leave law. This is a new law and in about 15 states – CA, NY, CO, MA being a few of them. Each state is different – in some states, it is fully paid by the employee (CA and NY for instance) and in other states, both the employee and employer pay this (CO and MA for instance). The employer rate is about 0.5% of payroll in the states that require employer participation. This funds parental leave, medical leave and family caregiving leave.
Here is a good state-by-state guide:
https://onpay.com/hr/basics/paid-family-leave-by-state