3 major unions, including the Teamsters, sent a letter to Sen Reid and Rep Pelosi, warning about dire consequences of Obamacare, as currently being pursued.

Link.

First, the law creates an incentive for employers to keep employees’ work hours below 30 hours a week. Numerous employers have begun to cut workers’ hours to avoid this obligation, and many of them are doing so openly. The impact is two-fold: fewer hours means less pay while also losing our current health benefits.
Second, millions of Americans are covered by non-profit health insurance plans like the ones in which most of our members participate. These non-profit plans are governed jointly by unions and companies under the Taft-Hartley Act. Our health plans have been built over decades by working men and women. Under the ACA as interpreted by the Administration, our employees will treated differently and not be eligible for subsidies afforded other citizens. As such, many employees will be relegated to second-class status and shut out of the help the law offers to for-profit insurance plans.

And finally, even though non-profit plans like ours won’t receive the same subsidies as for-profit plans, they’ll be taxed to pay for those subsidies. Taken together, these restrictions will make non-profit plans like ours unsustainable, and will undermine the health-care market of viable alternatives to the big health insurance companies.

(emphasis mine)

See also my recent diary Progressive Economist Predicts Obamacare will Implode 2015-2016