This is in connection with Box 12a thru 12d on my W-2, all of which are blank. Incidentally , I do have a Non-Qualified Pension plan, if that's a factor.
A 457(b) plan is a deferred compensation plan for employees of state and local governments or certain tax-exempt organizations. An eligible government 457 deferred compensation plan is not a qualified plan.
For informational purposes, contributions to a 457(b) plan are indicated with a code "G" in Box 12 of the Form W-2.