The Ironworkers District Council of Southern Ohio & Vicinity Annuity Trust has picked the retirement services division of Massachusetts Mutual Life Insurance Company to run its Taft-Hartley retirement plan.

The Ironworkers District Council, Dayton, Ohio, runs a plan that serves 8,200 participants in 11 local unions in Indiana, Kentucky, Ohio and West Virginia.

The plan manages $243 million in assets, according to MassMutual, Springfield, Mass.