The Chamber of Commerce's veneer of unity on health care is beginning to fade.

In the latest blow to the Chamber's "Just Say No!" strategy on health care reform, Wal-Mart joined with SEIU and the Center for American Progress today in announcing support for an employer mandate on health coverage.

An excerpt of the letter is below:

As the nation's largest private employer, the nation's largest union of health care workers with over one million members, and a think tank that has been a leader on health care policy...we are coming together to advance what we believe are important proposals that should be included in the current efforts to reform our nation's health care system.

[...] We are for shared responsibility. Not every business can make the same contribution, but everyone must make some contribution. We are for an employer mandate which is fair and broad in its coverage... Support for a mandate also requires the strongest possible commitment to rein in health care costs. Guaranteeing cost containment is essential.

Read coverage of this letter, here. Praise from the White House Office of Health Reform on this strong support for health care reform--including an employer mandate--here.