Lamb-Weston rule
The Lamb-Weston rule prescribes a way of apportioning coverage among multiple applicable policies that imposes pro rata sharing of covered losses, regardless of the policies' "other insurance" provisions.
Additional Information
Lamb-Weston, Inc. v. Oregon Auto. Ins. Co., 219 Or. 110, 341 P.2d 110 (Or. S. Ct. 1959).
