This is a challenge to share firm maternity/paternity policies. However, there are some great resources to help firms without a policy get thinking about how they can offer Associates either maternity or paternity leave. “Some” top up offering appears to be a competitive advantage.
The Canadian Lawyer Magazine recently wrote about this topic: https://www.canadianlawyermag.com/author/kevin-marron/the-parental-leave-pickle-264/
The Law Society of British Columbia has a good references as well: PREGNANCY AND PARENTAL LEAVE POLICY FOR ASSOCIATES