Benefits Enrollment

Enroll or make changes to health and income protection benefits and spending or savings accounts

Eligible Williams’ employees may enroll in benefits each fall during the Annual Enrollment period or as a new employee. Additionally, employees may make certain changes to their elections, either during a Special Enrollment period or in connection with a Qualified Status Change, when certain life events occur during the year, such as marriage, a new child or new insurance coverage.

To enroll in or to make changes to your benefits, log on to Williams Benefit Center (a User ID and password are required) or call the Williams Benefit Center at 866-WILL-BEN or 866-945-5236 weekdays from 7 a.m. to 7 p.m. CT.

Important dates for health benefits enrollment and changes

New employees must complete enrollment within 31 days of their date of hire.

Elections changes to made in connection with a Qualified Status Change must be completed within the relevant time period for the Qualified Status Change.

Enroll or make changes to savings plans

Employees can enroll in, or make changes to, their Williams Investment Plus Plan (401(k)) elections by contacting the Williams Retirement Center at Fidelity at or by phone at 1-877-208-0793.

Employees automatically become participants in the Williams Pension Plan upon completion of the service requirements as defined in the plan; no employee enrollment is necessary.

Employees can enroll in the Employee Stock Purchase Plan offering periods twice a year during the enrollment dates in June and December. Further information is provided on the company intranet.

Active employees can find more details about Williams’ benefits on HR Information Source, located on the corporate MyWilliams Intranet site.