I have seen many quit their jobs for various reasons.Why do employees quit in your view? Personally, I think most of the time it's because a boss is being a boss. They should rather be a leader and lead the team to the right direction.
Man A quit his job because he found a job with a better pay, so dissatisfaction on earning is a reason to quit.
Woman B quit hers because she couldn't balance work and family life, she had three kids and was always dozing off at work.