If you do not have health insurance, then you can purchase insurance on the Health Insurance Marketplace. You can also purchase insurance on the marketplace if the company that you work for gives you insurance and you are not happy with it. People can use the Health Insurance Marketplace to buy insurance on the website Healthcare.gov. If people want health insurance by January 1st, 2014, they have to register for the insurance on this market by December 15th, 2013. If they register after December 15th and they do not get health insurance by January 1st, then they will probably have to pay the tax from the individual mandate. There are ways to contact someone who works for the government if you have problems registering for health insurance on this market.