In an article appearing in the February 10, 2010 editions of the Los Angeles and San Francisco Daily Journals, I discuss the impact of the Ninth Circuit's Montour v. Hartford Life & Accident, 588 F.3d 623 (9th Cir. 2009). Here it is: 
The Employee Retirement Income Security Act of 1974 (ERISA) is certainly one of the most significant pieces of federal legislation ever enacted by Congress as it impacts the employee benefit plans and retirement funds of millions of Americans. Recently, the 9th U.S. Circuit Court of Appeals issued one of its most significant ERISA decisions in Montour v. Hartford Life & Accident, 588 F.3d 623 (9th Cir. 2009).
Under ERISA, when a plan participant challenges the administrator’s decision to terminate or deny benefits, that decision is evaluated under either an abuse of discretion or de novo standard of review. ERISA litigation lawyers know well that when they are involved in litigating ERISA cases, the applicable standard of review can be outcome determinative. That is why Montour should be at the top of every ERISA lawyer’s reading list.
In Montour, the 9th Circuit clarified the application of the abuse of discretion standard of review when an insurer has a structural conflict of interest. A structural conflict of interest arises when the entity making the decision whether or not to approve benefits is also the same entity that is ultimately responsible for paying those benefits. In the realm of an insured employee benefit plan, this is a common occurrence as insurers typically act as claims administrators and the funding source of ERISA benefits. Because vast numbers of ERISA plans include a provision granting the plan or claims administrator discretionary authority to interpret the plan’s terms and to decide the payment of benefits under the plan, determining when and under what circumstances a conflict of interest will be so significant as to affect the outcome of the case is of course critically important.
Prior to Montour, but after the 9th Circuit’s en banc decision in Abatie v. Alta Health & Life Ins. Co., 458 F.3d 955 (9th Cir. 2006), under an abuse of discretion standard of review, a district court would generally uphold the administrator’s decision provided it was grounded on any reasonable basis and made in good faith, weighing any conflict of interest of the administrator as factor in determining whether abuse of discretion existed. See Sznewajs v. U.S. Bancorp Amended & Restated Supplemental Benefits Plan, 572 F.3d 727, 734-735 (9th Cir.2009).
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