Employers around the country are slashing their workers' hours to below 30 per week, and they say the Affordable Care Act is to blame. The law, passed by Democrats and signed by President Barack Obama in 2010, requires them to offer health insurance to employees who work at least 30 hours per week. Bosses at fast-food franchises and colleges say they can't afford to do that. The White House dismisses the notion that the new requirement will tamp down job growth, but even a labor union that supports the law fears it might. The new provision is set to take effect 16 months from now, but others are set to take effect sooner. The beginning of enrollment for insurance coverage for up to 9 million people is just a few weeks away, and with it are approaching new headaches over the logistics and politics of implementing the massive law.