As college students and their parents finalize their enrollment and pay tuition and fees for fall, many face one fewer headache than in years past: no more worrying about whether they’ve waived the optional health-insurance coverage in time to avoid being charged for it.

In large part because of changes brought by the federal Affordable Care Act, a number of colleges have stopped providing student health insurance.

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Nearly 22,000 Ohioans — more than one-third of whom live in the Columbus area — have until Thursday to find a new health insurance plan or face being uninsured for most of July.

The Ohio Department of Insurance took over InHealth Mutual, a subsidiary of Coordinated Health Mutual, in May. The health insurance cooperative based in Westerville was set up in 2014 to be a lower-cost option for Ohioans who shop the federally run health insurance marketplace. The state agency is liquidating the company because it ceased to meet the federal requirements for minimum essential coverage under the Affordable Care Act.

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For the first time, businesses that employ the equivalent of 50 to 99 full-time workers face a fine of $2,160 per worker if they don’t provide coverage. (An employer’s first 30 workers are excluded from the calculation.)

For an employer with the equivalent of 75 full-time workers, for example, the maximum penalty would be $97,200 for 2016.