Why Did Employer Premiums Go Up?

I work for a company that employs about 300 employees. We had good health insurance coverage. My employer cares about his employees and provides everything he can for them. This year because of the ACA our healthcare costs increased 33% for slightly less coverage. It was stated that we have what is considered a Cadillac plan and will need to either reduce cost/coverage or have a huge increase in 2018 when additional taxes kick in. There are 300 employees that are wondering “What is so affordable about this Care Act”?

Is reform of the program going to be made to protect employers that care about there employees and provide the best they can? We are not CEO’s making millions…we are the middle class.