I know it sounds cold, but time lost due to health issues impacts more than just you, -the driver. It impacts the whole operation because now trips need to be adjusted or other drivers need to fill in. Lost wages can greatly affect your recovery as well. The increase in insurance premiums takes its cut. The ripple effect is far reaching. You might be physical fitness nut, but because others are not, your rates are adjusted to meet the insurance claims.
To put this in proper perspective, The Department of Labor (DOL), have released their findings in regards of missed working days due to truck accidents and illness. According to their Bureau of Labor Statistic study, truck drivers were among the highest to miss work due to this. Not saying they were the highest, but only occupations like police officer or firefighter had higher absentees. Though, they were beaten out by those in the janitorial field as well.