Sims began her career representing injured workers in North Florida. She co-founded and served as chair of Florida Workers’ Advocates: Florida’s only statewide injured worker advocacy organization. In 1999 she was elected the first female president of the Florida Bar Association Worker’s Compensation Section. She remains a lifetime emeritus member. From 2003 to 2004, Sims served as the president of the Marion County Bar Association. Sims is the author of “Exposing Deceptive Defense Doctors,” a treatise on her trade. She co-authored the Thomson Reuters text, “Litigating Minor Impact Soft Tissue Cases.” Sims has authored articles in The Champion Magazine and Trial Magazine. She is also the author of several children’s books that address difficulties faced by children of injured workers. Since 2000, Sims has lectured at law schools and conducted seminars at various legal and governmental organizations around the world.