"As the backbone of our health care system, hospitals and health systems are committed to delivering high-quality, accessible, and affordable care in every community," AHA President and CEO Rick Pollack said.

Companies will have to help the workers verify whether they are working enough to keep their health coverage.

Democrats warn of ACA marketplace disruption, workforce reductions and erosion of core public health programs.

Plan sponsors must ensure that their written plan documents are updated to conform with actual plan operation.