Trade union roles are changing due to port concessioning in Nigeria. Concessioning has led to workforce reductions, weaker unions, and changes to industrial relations. Unions have responded by engaging in dialogue, training workers, and social advocacy. Traditionally, unions negotiated wages and conditions and provided worker representation. Now, union leaders must adapt to changing environments under concession contracts while continuing core roles like bargaining and grievance handling. Strategies are needed to address challenges like deunionization, flexible workforces, and business restructuring under concessioning. Effective leadership will be required to create a positive future for unions.