( April 15, 2025, 8:17 AM EDT) -- SAN FRANCISCO — In separate briefs, a former 401(k) participant and amicus curiae organization Public Justice urge the Ninth Circuit U.S. Court of Appeals to affirm that a nonseverable arbitration provision is void because it contains a class, collective and representative action waiver that they say prevents effective vindication of plan participants’ substantive right under the Employee Retirement Income Security Act....