Academic Proof for What You Already Knew

Emotions in the workplace are important. Professor Sigal Barsade of Wharton makes the point:

Everybody brings their emotions to work. You bring your brain to work. You bring your emotions to work. Feelings drive performance. They drive behavior and other feelings. Think of people as emotion conductors.

You can get the executive summary of her research at Managing Emotions in the Workplace: Do Positive and Negative Attitudes Drive Performance? — short answer — you bet.

The more academic version can be found at Why Does Affect Matter in Organizations?