Over
the past thirty years courts have been called upon to determine the best way to
allocate available insurance coverage for long latency (i.e., long tail)
personal injury claims spanning multiple policies. As a result, two allocation methods have
evolved and been used throughout the country: pro rata and all sums.
Generally,
under the pro rata approach, insurers that cover the loss are responsible for
their respective portion of the loss. Often
based on an insurer’s “time-on-the-risk,” the pro rata approach allocates costs
across applicable policies based on the time that insurance policies covered
the risk.
Under
the all sums approach (a.k.a., joint and several allocation), each insurer who
issued a policy which covers a loss may bear full responsibility for the loss
up to the monetary limit of each policy.
Depending on policy limitations and the nature of the injury or
injuries, the policyholder may recover the totality of its loss from one
insurer whose policy was in effect at the time of, and covered, the loss. The insurer may then seek contribution from
the other insurers who also covered the loss.
In
Security Inc. Co. of Hartford v.
Lumbermen’s Mut. Cas. Co., 264 Conn. 688 (2003), the Connecticut Supreme
Court adopted the pro rata time on the risk allocation method for defense and
indemnity costs associated with long latency personal injury claims. The court held that the pro rata method did
not violate the reasonable expectations of the parties since “neither the
insurers nor the insured could reasonably have expected that the insurers would
be liable for losses occurring in periods outside of their respective policy
coverage periods.” Id. at 710.
In
other states, however, the conversation on which method should be applied
continues. Indeed, approximately thirty
states, have not definitively selected one approach. Two recent state court decisions address the
issue with varying outcomes. Mt. McKinley Ins. Co. v. Corning Inc.,
No. 602454/02 (N.Y. Sup. Ct. Sept. 7, 2012); State of California v. Continental Ins. Co., 55 Cal. 4th 186 (Cal.
2012).
Is New York “Team Pro Rata”?

Though New York is widely referred to as a “pro-rata” state, the New York Court
of Appeals has not definitively adopted the pro rata approach over the all sums
approach. Thus, raising the question –
Is New York Team Pro Rata?
Recently,
a New York trial court rejected the all sums approach in favor the pro rata
time-on-the-risk allocation for defense and indemnity costs arising from
asbestos-related bodily injury claims. Mt. McKinley Ins. Co. v. Corning Inc.,
No. 602454/02 (N.Y. Sup. Ct. Sept. 7, 2012) (a copy of the decision can be
found here). In Mt. McKinley, Plaintiffs Lumbermen’s Mutual Casualty Company (“Lumbermen’s”)
and Century Indemnity Company (“Century”), primary insurers of defendant Corning
Inc.’s former subsidiary, an asbestos manufacturer, brought suit seeking a
declaration that the proper method of allocation is pro rata across applicable
policies based on the time that the insurance policies covered the risk (i.e.,
time on the risk). Lumbermen’s and
Century ultimately moved for summary judgment arguing that the court should
allocate indemnity and defense costs on a pro rata basis.
Corning
cross-moved for summary argument, arguing for all sums (i.e. joint and several)
allocation. Specifically, Corning argued
that the alleged “non-cumulation” or “non-stacking” provisions in various
policies require all sums allocation.
The
court disagreed with respect to indemnity costs, finding that the purpose of
the “non-cumulation” or “non-stacking” provisions is to prevent the insured
from recovering greater liability than that for which was contracted, and that
these provisions do not require all sums allocation. Id.
at 16. Indeed, the court found that
adopting pro rata allocation would not render the policy language “mere
surplusage,” as argued by Corning, but would instead affect “the intent of the
policy’s language of limiting multiple recovery for the same injury in the same
policy period.”
The
court also applied pro rata time on the risk allocation to defense costs,
noting that, although the policies do not mandate either pro rata or all sums allocation,
“the issue is decided as per equity and the facts of the case.” The court found that equity required pro rata
allocation because the all sums approach would force an insurer to pay for that
portion of the defense costs attributable to Corning (for periods when it chose
to self-insure) and to an insolvent primary level insurer. That insurer would then be forced to litigate
with Corning as to Corning’s own liability for defense costs, as well as those
attributable to any insolvent insurers, resulting in a “needless waste of
resources” that does not “comport with fairness . . . .”
California Leaves No Doubt – “Team All Sums,” All the Way
Several
months ago, the California Supreme Court left no doubt that California has
adopted all sums allocation. State of California v. Continental Ins. Co.,
55 Cal. 4th 186 (Cal. 2012)(a copy of the decision can be found here),
In
State of California, the California Supreme
Court affirmed two of its previous decisions which applied a continuous trigger
of coverage to long latency claims, and which adopted the all sums rule,
respectively. See Montrose Chemical Corp.
v. Admiral Ins. Co., 10 Cal. 4th 645, 655 (1995); Aerojet-General Corp. v. Transport Indemnity Co., 17 Cal 4th 38,
55-57 (1997).
Specifically,
in State v. California, the court was
called upon to determine how liability coverage for property damage that
occurred at a state-owned environmental clean-up site over the course of many
years should be allocated amongst its insurers.
The court found that under the commercial general liability policies at
issue, the plain “all sums” language of the agreements compel the insurers to pay
“all sums which the insured shall become obligated to pay . . . for damages . .
. because of injury to or destruction of property . . . ” and that “[t]his
grant of coverage does not limit the policies’ promise to pay “all sums” of the
policyholder’s liability solely to sums or damage during the policy period.” Id.
at p. 13.
The
court also found that “stacking” was appropriate under the respective policies.
As the court explains, stacking generally refers to the “stacking of policy
limits across multiple policy periods that were on a particular risk” so that “when
more than one policy is triggered by an occurrence, each policy can be called
upon to respond to the claim up to the full limits of the policy.” The court found that adopting the all sums
with stacking approach “stacks the insurance coverage from different policy
periods to form one giant uber-policy with a coverage limit equal to the sum of
all purchased insurance policies.” Id. at 15. Thus, instead of treating a long latency
injury as though it occurred in one
policy period, it treats all triggered insurance as though it were purchased in one policy period,
providing the insured access to “far more insurance” than it would ever be
entitled to within any one policy period.”
Id. The court reasoned that stacking fits with
both an insured’s and an insurer’s reasonable expectations, and that an insurer
may avoid stacking by specifically including an “antistacking” provision in its
policy. Id. at 16.