Researchers have found that companies with happy employees are more successful on a range of metrics, including productivity, sales, and accuracy. However, providing perks such as free food or massages in the office may not be enough to improve company performance. Instead, it's about creating an environment where staff feel they are contributing to something significant, which leads to fulfillment. This can be achieved through practices such as recognizing employees' work, allowing them to grow professionally and personally, ensuring customer service is everyone's responsibility, and building strong relationships with the team. Companies like Zappos, Moo.com, Valve, Buffer, and Mailchimp have implemented policies that prioritize happiness, such as offering a $2,000 signing bonus if an employee quits after the first week. The key to fostering happiness at work is to focus on meaningful work, rather than expensive benefits.