City of Somerville 457(b) **SRA ONLINE ENROLLMENT PROCESS** Click here to start, stop or change a Salary Reduction Agreement. Click here to review the Online Salary Reduction Agreement Instructions. Authorized Investment Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 457(b) Empower Retirement (formerly Great West Life & Annuity Ins Co)(800) 537-2033 Equitable(800) 628-6673 Nationwide Insurance Company(800) 848-6331 Roth 457(b) Empower Retirement (formerly Great West Life & Annuity Ins Co)(800) 537-2033 Equitable(800) 628-6673 Nationwide Insurance Company(800) 848-6331