Barker  v. Ceridian Corp.,  1999 U.S. App. LEXIS 26470 (8^th Cir. October 21, 1999)- Kent Barker, Carla McAndrews, and Martin Timmons, on behalf of themselves and a class of Ceridian employees who were disabled before January 1, 1991, sued after the company discontinued its practice of paying insurance premiums as a benefit under its long-term disability plan. At issue was whether the general reservation clause contained in the summary plan description (which purported to allow Ceridian to change or discontinue the long term disability plan) permitted the company to change the plan as to those employees who were already disabled.  This court found that the reservation of rights was ambiguous on this point, and that consideration of extrinsic evidence of intent should be allowed. After reviewing the record on the question of whether Ceridian intended benefits to vest at the time of disability, this court reversed the district court’s decision (as "clearly erroneous"), and found in favor of Barker and the class members.