According to a study conducted by the National Council on Compensation Insurance, younger workers have more injuries and illnesses than older workers; but older workers have higher costs per claim. The researchers discovered that age is an important factor in overall claim costs, but the significance of age on claims frequency has lessened. This has been interpreted to mean that age may not play an important role in future frequency trends. However, the relationship between age and claim severities is basically unchanged.
Factors associated with age, such as average wages, claim durations, lump-sum payments, injury diagnoses, and number of medical treatments, comprised a large part of the reason for the differences in the severity of claims between younger and older workers. The differences in wages and duration of claims were the principal reasons for the differences in the amount of payouts between younger and older workers. Differences in wages accounted for approximately one third of the differences in the amount of payout, while the differences in the duration of claims accounted for almost one half the difference.
Older workers experience more high cost injuries, such as injuries to joints like rotator cuffs and knees. These were more commonly experienced by workers aged 45-64. Workers aged 20-34 more commonly experienced ankle sprains. Carpal tunnel syndrome and injuries to the lower back are among the top 10 diagnoses for workers of all ages. The researchers pointed out that the differences in the types of injuries only comprised about a quarter of the difference in medical severities between younger and older workers. The real factor influencing the difference in medical severities between older and younger workers was the significantly higher number and different mix of treatments within a diagnosis. This alone accounted for 70 percent of the difference.
Less than 10 percent of the difference in medical severities is due to a slightly more costly mix of treatments for older workers. This was reflected in small differences in the average prices of different types of medical services. The greater number and different mix of treatments also contribute to the longer duration of payments for older workers.
As for trends in loss costs, the researchers noted that the baby boomers' impact was apparent when the data was viewed historically, but the major impact of this aging workforce has probably already occurred and employers should not anticipate that the aging workforce would present a major problem in terms of future claims costs.