If they don't, the federal government will hit them with hefty fines.
All that could change Thursday when the Supreme Court is expected to reach a decision on the Affordable Healthcare Act signed into law by President Obama in 2010.
At issue: What will companies do?
The new law provides tax credit for those businesses but are they enough to offset the costs of providing healthcare insurance?
We spoke with a Conway construction company to see how it might affect their company and other businesses.
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