I've seen this at the company I work for. The employee and employer contribution both are growing rapidly.
Have you taken the time to try and figure out WHY health insurance costs are rising so fast?

Do you think the whole third-party payer system for health care payments might have a role in this?

Have you read about what Whole Foods and Safeway are doing to keep their health care insurance costs even while the national average has risen almost 40% during the same timeframe?