
Biography
Erin B. Oster is an associate attorney at Reiter Law Firm. Born and raised in Tampa, Florida, she has called South Dakota home since 2012. Erin started her academic journey at Florida State University before transferring to Northern State University, where she received her Bachelor of Arts Degree in English with an emphasis in professional writing and rhetoric and a minor in desktop publishing in 2016.
Following her graduation, Erin pursued a successful career in journalism, developing a strong foundation in professional writing and communication. Building on this expertise, Erin attended the University of South Dakota Knudson School of Law, where she received her juris doctorate in 2023. While in law school, Erin was a member of the Moot Court Board and The Order of the Barristers. She participated in four moot court tournaments, achieving second place at the National Criminal Procedure Tournament in San Diego, semi-finalist team and second place oral advocacy team honors at the Judge John R. Brown Admiralty Competition in New Orleans, and quarter-finalist status at the Leroy R. Hassell, Sr. National Constitutional Law Competition. She was also named Best Advocate at the USD Alternative Dispute Resolution Competition, an intramural competition for first-year law students. She also served as a graduate assistant for the WORKS Divorce Clinic, helping indigent individuals navigate the pro se divorce process.
Following law school, Erin honed her legal research and writing skills as a law clerk for the Second Judicial Circuit of South Dakota, where she drafted orders and conducted analysis for fourteen judges at the Minnehaha and Lincoln County court houses. She was admitted to both the South Dakota Bar and the Federal District Court in Sioux Falls in 2024.
Erin's background as a professional writer informs her approach to legal practice. Her extensive experience in written communication and research gives her a unique ability to communicate complex legal concepts effectively and persuasively, skills she brings to her work at Reiter Law Firm. Her practice focuses on research and writing, leveraging her distinct background to benefit the firm's clients.
Outside of work, Erin enjoys spending time with her new husband, whom she married in January 2024, her stepchildren, and their pets.