WILLIAMSTOWN -- A Williamstown man was sentenced to 12 months in prison for hiring undocumented workers at his dry cleaning business and falling to collect and pay payroll taxes for them, according to a release from the U.S. Attorney's Office.

Bill Li, 50, owned Minuteman Cleaners on the North Black Horse Pike in Williamstown, and was responsible for hiring employees and handling the books and paychecks at the business, according to the release.

Acting U.S. Attorney William E. Fitzpatrick said during 2012 and 2013, Li hired undocumented immigrants, primarily from Mexico and Guatemala, to work at his business. The employees reportedly worked six days a week for 10 hours a day and were paid between $400 and $500 in cash per week. As part of their compensation, the workers were allowed to stay at a house that was co-owned by Li, Fitzpatrick said.

In total, Li failed to pay employment taxes of at least $79,000, and did so knowingly for his own financial gain, the release said.

Li pleaded guilty to charges of failure to collect, account for, and pay over payroll taxes and harboring the undocumented workers. Li was sentenced to 12 months in prison, as well as three years of supervised release. He was also ordered to pay restitution of $79,000.

Caitlyn Stulpin may be reached at cstulpin@njadvancemedia.com. Follow her on Twitter @caitstulpin. Find NJ.com on Facebook.