Complying with the health care law is costing small businesses thousands of dollars that they didn’t have to spend before the new regulations went into effect.

Brad Mete estimates his staffing company, Affinity Resources, will spend $100,000 this year on record-keeping and filing documents with the government. He’s hired two extra staffers and is spending more on services from its human resources provider.

The Affordable Care Act, which as of next Jan. 1 applies to all companies with 50 or more workers, requires owners to track staffers’ hours, absences and how much they spend on health insurance. Many small businesses don’t have the human resources departments or computer systems that large companies have, making it harder to handle the paperwork. On average, complying with the law costs small businesses more than $15,000 a year, according to a survey released a year ago by the National Small Business Association.

“It’s a horrible hassle,” says Mete, managing partner of the Miami-based company.