Gloria Lane Shirley Spalla John Lucas Jan Slagle Tommie Lillie Melanie Holsinger v. Amoco Corporation Amoco Oil Company Amoco Credit Card Center

BOWMAN, Circuit Judge.

Appellants, representatives of a certified class of former “at-will” employees of Amoco’s credit card facility located in Des Moines, Iowa, appeal from an order of the District Court 2 granting summary judgment to Amoco on their claims for bonus payments for 1994. We affirm.

I

Beginning in 1993, appellants worked under a bonus program, the Amoco Variable Incentive Pay Program (“VIP Plan”), under which they were paid an annual cash bonus if the company met certain goals. The VIP Plan remained in effect for employees of the Des Moines facility until September 20,1994, when…