Keep the Skaters In Line
Referees are responsible for keeping everyone safe. It's a tough job, but it can also be really fun. As a thank you, referees always get to skate for free at OSRDA practices and events, no matter their league affiliation.
Non-Skating Officials, or NSOs, are responsible for a number of things that keep game play organized. They time the jams and penalties, and they keep score, among many other duties. This is a great position for people who want to be involved in derby, but who might not be able to, or want to skate.