4 Tips for Keeping that New Hire Hiring is a huge financial investment. Make sure you protect it.

Hiring people is a lot of work -- and a huge financial investment. In fact, the Center for American Progress says it costs roughly 20 percent of a new hire's salary just to get them signed on. So once they're hired, you'll want a lineup of great tech that gets them excited and keeps them engaged, says David Secunda, founder and CEO of Boulder, Colo.-based HR startup WorkBright.

Before they're hired

When an employee quits early, it's often because they had very different expectations about the job -- which means you didn't hire the right person. Use social media to provide transparency into your company. Create "Day in the Life" videos on YouTube to profile employees, special events and other "insider views" of the business. Be honest about all positions -- even those parts that aren't glamorous.