My employer is keeping the cost the same for employees. I don't know if they are paying more though.
Our company did a huge overhaul to the plans offered last year, in part to prepare for the HCA. We went to mostly high-deductable plans with HSAs/HRAs, where the company funds the HSAs/HRAs each year for us with a significant portion of the annual deductible. It actually resulted in lower rates, and people feeling happier about their coverage. It did result initially in a lot of confusion as people figured out how they worked, how to get expenses submitted, etc. but in the long run, it's worked out well.
This is the type of plan we've had for a couple of years now. We do have a choice of a more "traditional" plan but it is more expensive. The plan can be confusing (my SO still doesn't understand it so I just have to administer our healthcare stuff) but it really does work out cheaper in the long run for us. We have used up our HRA funds every year so far and hit the "donut hole" where we have to pay $750 out of pocket before the regular 80/20 insurance kicks in ... but it still works out better not having to pay the co-pays every time we go to the doctor. I have ongoing health issues and now so does my SO so the co-pays over the long run would work out to a lot more than $750. The only hard part is when you have to get thru that out of pocket. Last year we even met our max out of pocket total ($1500) but after that the insurance paid 100%. I'm hoping the plan stays the same but we haven't had our sign-up period for next year yet.