According to the Advertiser Staff and News Services, "A law enacted in Hawai'i in 1974 that requires employers to provide health insurance for employees working at least 20 hours a week is being cited by researchers who are skeptical of similar mandates being suggested in the argument for universal health care.
The result of Hawai'i's Prepaid Health Care Act has been that businesses have relied more on employees who work fewer than 20 hours a week and thus aren't covered under the requirement, wrote San Francisco Federal Reserve Bank research adviser Rob Valletta and co-authors Tom Buchmueller and John DiNardo, both University of Michigan professors."