This study addresses the problem of Dynamic Line Balancing (DLB) in a two-stage production assembly tandem line where there are worker differences.This study examines the dynamic decision rules for workers to operate under DLB with a low level of work in process (WIP), in the constant work-in-process (CONWIP) system.We develop a new dynamic decision rule, the Smallest R No Starvation-II (SRNS-II), to maximize the throughput of the system.Results showed that DLB improves the throughput rate under a low WIP level.This study provides managerial insights for worker assignments and workload balancing.