Health experts are always looking for ways to help employers create a safe and healthy environment for employees. A recent study suggests individuals who work longer than eight hours increase their risk of heart disease by up to 80 percent. Other studies suggest full-time working moms are healthier compared to stay-at-home moms. Regardless of sex, age or race, a healthy and positive working environment plays a pivotal role in an individual's health. Here are five ways for employers to keep employees happy.