JACKSON, Mo. -- A collision with a semi-trailer truck seven years ago left 52-year-old Deborah Shank permanently brain-damaged and in a wheelchair. Her husband, Jim, and three sons found a small source of solace: a $700,000 accident settlement from the trucking company involved. After legal fees and other expenses, the remaining $417,000 was put in a special trust. It was to be used for Mrs. Shank's care.

Instead, all of it is now slated to go to Mrs. Shank's former employer, Wal-Mart Stores Inc.

Two...