New York (CNN Business) America's health care sector is an employment powerhouse that is keeping the US labor market strong. Health care hiring is so robust, the industry would be pretty much immune to a recession or changes in politics.

The population of the United States is aging and living longer. For the health care industry this means more people require care for a longer period of time.

"Health care is by far the largest and healthiest sector of the economy," Glassdoor Chief Economist Dr Andrew Chamberlain told CNN Business.

And as long people continue to get sick and need care, the sector will blossom. That's what's making it immune to outside shocks like a recession or a government efforts to reform the industry, experts say.

Presidential candidates Elizabeth Warren and Bernie Sanders, for example, want to make drastic changes to America's health care industry . Although reforms might change prices and payment structures for care, they won't keep elderly people from needing it.

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