19 signs someone is about to quit their job

Most bosses are caught off guard when facing a mass employee exodus, and the same can happen when just one valued employee resigns.

"As the boss, it's important to watch for the symptoms of an impending departure so you can address the issues before it's too late," says Lynn Taylor, a national workplace expert and the author of "Tame Your Terrible Office Tyrant: How to Manage Childish Boss Behavior and Thrive in Your Job." "Losing even one valued employee can disrupt your business, not to mention losing several team members. And if you're running a small company or startup, these losses can destroy your business."

Michael Kerr, an international business speaker and author of "The Humor Advantage," agrees. "Losing employees can create a substantial impact on everything from service delivery to scheduling. It can impact the culture in a team in a negative way. And there's a substantial cost and time commitment involved in replacing and training new employees, so the more time a manager has to prepare for the changes, the better."

Taylor and Kerr shared 19 signs that your employees are about to quit. They say these are the ones you should watch out for so you can act before it's too late: