Central Plastics Co., Shawnee, Okla., hired MassMutual Retirement Services as bundled provider for its $12 million 401(k) plan. Central Plastics also has expanded the investment options to eight from five, said Melani Clifton, human resources director. The investment options are a guaranteed fund, a core bond fund and an indexed equity fund run by MassMutual; a global equity fund managed by OppenheimerFunds, an affiliate of MassMutual; Equity Income II and Blue Chip Growth managed by Fidelity Investments, an alliance partner; Mid-Cap Growth run by T. Rowe Price, an alliance partner; and a self-directed brokerage account. Third-party administrator Compensation Planning had provided administration; Central Plastics executives selected the investments, she said. About 400 or 88% of Central Plastics employees participate in the 401(k) plan, Ms. Clifton said.