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New Issues in Workers Compensation Pose Challenges for Casualty Actuaries

Source: Casualty Actuarial Society


Posted on 09 Apr 2013 by Neilson

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Workers CompA reworking of a key piece of the workers compensation rating formula and a New York statute that could create significant new liabilities for workers compensation insurers were among the issues discussed by a panel of experts at the Casualty Actuarial Society's (CAS) Ratemaking and Product Management Seminar held March 12-13 in Huntington Beach, California.

The rating formula adjustment won't change rates overall, but it will change premiums for most insureds, said Tony DiDonato, FCAS, MAAA, director and senior actuary at the National Council on Compensation Insurance, the Boca Raton-based organization that estimates loss costs, the main block on which compensation rates are built.

The change, which took effect January 1, 2013, results in a slight decrease for most insureds, DiDonato said. But balancing out those many decreases will be some significant increases, often among the largest insureds, he said.

The change involves the experience mod, the credit (or debit) that insureds receive for their own claims experience. The mod compares an insured's claim experience to that of comparable employers. If experience is good, the insured gets a credit - a discount. If not, the insured receives a debit.

What's changing is the delineation between the primary and excess portions of a claim, known as the split point. For the past two decades, the split point has been $5,000. This value is important, because the primary portion of each claim has a much larger impact on an employer's mod than the excess portion - the idea being that the primary loss amount is more predictive than the excess amount.

But inflation has both eroded the primary/excess split point and hurt its predictive power. These days, the mod doesn't give enough credit to good experience and doesn't penalize poor experience enough.

"The plan was not being as predictive as it used to be" in distinguishing between good and bad risks, DiDonato said.

The change: Raising the split point - to $10,000 in 2013, to $13,500 in 2014, and to an estimated $17,000 in 2015. These adjustments, incorporated into the entire rating formula, improve the experience mod's predictive power.

In 26 of the 38 states where the plan has been approved, NCCI actuaries sampled 75,007 risks, calculating the experience mod under each system.

The result: The vast majority - 62 percent - would see their rates fall less than 5 percent. Another 11 percent realized decreases between 5 percent and 10 percent. Rates were unchanged for 4.5 percent of risks. Less than one in four would see a rate increase.

Overall, the average mod was 0.98 - a 2 percent discount - under the old system and 0.97 - a 3 percent discount - under the new system. DiDonato attributed the slight change to vagaries in the states where the new system had been approved. All NCCI states have approved the changes to the plan.

A separate set of changes in New York could leave insurers under-reserved, said Julia Stenberg, FCAS, MAAA, an assistant vice president and actuary at CNA insurance companies. The issue here is a proposal to end an unusual element in New York's comp law, the reopened case fund. Stenberg explained that the structure could create a reserve deficiency among New York comp writers.

The issue emerged as part of a package of reforms proposed earlier this year as part of the state budget. The best-known part of the proposal would create bonds to pay off losses from failed self-insured comp plans. But Stenberg indicated that attention should also be focused on the end of the reopened case fund.

In New York, cases that reopen three years after an insurer made what it thought was final payment (and seven years after the original accident) can be turned over to a reopened case fund run by the New York Compensation Insurance Rating Board (NYCIRB). Employers pay an assessment that covers these claims.

Under the proposal, the fund, created in 1933, would close January 1, 2014. Insurers would remain responsible for any reopened claims.

The closing creates an actuarial issue, Stenberg said. Because these reopened claims were handled by NYCIRB, the losses aren't included in an insurer's claims experience.

To handle pricing, data collected by the NYCIRB will be available to rating bureaus, so rates can be properly adjusted. However, insurers won't have that information, so their loss estimates will likely be understated. Stenberg estimated the deficiency to be between $1 billion and $2 billion.

"It's something important to consider if [an insurer has] exposure there or your clients have exposure there," Stenberg said.

The Casualty Actuarial Society fulfills its mission to advance actuarial science through a singular focus on research and education for property/casualty actuarial practice. Among its 5,700 members are experts in property-casualty insurance, reinsurance, finance, risk management, and enterprise risk management.


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