Employees who reach the age of 50 can finally begin to see the light at the end of the health care premium tunnel. Those who hit 60 while on the job actually experience some relief.

These and others findings can be found in the 2013 ADP Annual Health Benefits Report, which draws upon responses from employees at 175 companies, who were questioned about a wide range of health care cost metrics. The study focused solely on full-time employees with companies where both employees and the employers contributed to the health plan premium.

The premium-by-age data showed that workers between the ages of 40 and 49 shouldered a much greater burden of coverage than any other group. ADP speculated that this age bracket has more dependents who have coverage up to the age of 26 than those in other categories, thus accounting for the big jump from the 30-39-year-old bracket. Here's the breakdown by age and average premium paid:

• Younger than 30, $576
• 30-39, $817
• 40-49, $949
• 50-59, $891
• 60+, $804

Premiums are rising, of course, we all know that. The average cost of premiums has increased by $100 since 2010, from $731 to $832.