Generally, claims frequency refers to a ratio of claim counts to a selected exposure base during a specified period. But there can be several variations. Generally, claims frequency refers to a ratio of claim counts to a selected exposure base during a specified period. But there can be several variations. (Photo: Shutterstock)

Workers' compensation has experienced a long-term decline in overall claim frequency, in part due to automation, robotics and continued advances in safety as contributing factors, the National Council on Compensation Insurance (NCCI) reports. While total claim severity has increased, frequency declines have generally outpaced severity.

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