With increasing concerns about sustainability, many state governments and other public-sector organizations are moving from traditional defined benefit retirement plans to defined contribution or hybrid plans. This transition can be extremely complex, with a variety of compliance dimensions and participant concerns. GBS can help you navigate the transition with confidence. Our team of retirement plan consultants have considerable experience with public sector clients, including municipalities, states and agencies as well as defined benefit and defined contribution plans.aculty and staff. The challenge is providing attractive benefits while carefully managing costs. GBS Retire can help you work towards achieving that balance. Our team of nationally recognized consultants can deliver tailored solutions.