2025 Open Enrollment Oct 21 – Nov 4 Posted on October 19, 2024 by LALRG LANL 2025 Open Enrollment for retirees will occur October 21 to November 4, 2024. Elections must be submitted by 11 pm MT on November 4 at www.LANLBenefits.com. Retirees should have received a notification in the mail as show below.