In the previous article of this series, "Part 1: Why Are Your Workers' Comp Claims Doubling?" we discussed comorbidities. If you don't recall from the last article or are starting with part 2 of the series, comorbidities are medical conditions that exist at the same time another condition is being treated. The most common comorbidities are obesity, diabetes, hypertension, and drug abuse. Unfortunately, these nasty things can raise your claims costs by about $10,500-$13,500 per claim, depending on the comorbidity.