The happiness factor really does effect your business. It is up to your company to decide how to get the most production out of their employees by investing in the happy atmosphere in their companies. Happy employees are 20% more productive but sales personnel are even more so, at 37%, it all is in the attitude. Ask your employees what they really want in a company to create this work place culture. Is it time, such as paid time off, vacation days, or is it being realistic about the workload that an employee can handle in the hours allotted.
Publicly recognize your top performers as it gives them a sense of team spirit and control over their work place environment. Also strive to create family-like atmospheres but being respectful, no gossiping, and spending time outside of the office. All of this will pay off in big ways for your company.