Earlier today I praised the Obama administration's move to extend labor protections, including overtime and the minimum wage, to some two million home aides. Now for the reality check: This step will surely increase the cost of caring for the aged and disabled at a time when millions of Baby Boomers are starting to retire, straining entitlement programs. What's more, hikes to the minimum wage—such as one recently enacted by California—will further boost home care costs.