This document discusses I-9 compliance for businesses with multiple locations. It outlines 5 secrets for ensuring 100% I-9 compliance across all locations: 1) train managers, 2) use an integrated system, 3) onboard existing employees, 4) require I-9 completion before payroll, and 5) mitigate audit fines. It then provides an overview of the Planet Fitness and Brick Bodies gym chains, describing their operations before and after implementing the PeopleMatter HR and I-9 management system. The system improved their hiring compliance, ensured all existing employees were re-onboarded, and mitigated $1 million in potential fines.