US healthcare costs rose 6.4% from a year ago, more than double the 3.1% increase in wages, sharpening pressure on corporate margins. Danielle DiMartino Booth s

US healthcare costs rose 6.4% from a year ago, more than double the 3.1% increase in wages, sharpening pressure on corporate margins. Danielle DiMartino Booth says firms with limited pricing power are likely to lean more on temporary workers.