But the provision in the federal law, that an employer must pay a worker a 50 percent premium above his regular hourly rate of wages for all hours worked in any week above forty, was not based primarily on the belief that forty-five hours a week, say, was injurious either to health or efficiency. It was inserted partly in the hope of boosting the worker’s weekly income, and partly in the hope that, by discouraging the employer from taking on anyone regularly for more than forty hours a week, it would force him to employ additional workers instead.
