A compilation of surveys show that millennial's happiness is closely tied to having close friends at work. Good working relationships seem to make people more productive and satisfied with life.

In 1999, a research was conducted to uncover fascinating connections between work and the quality of modern life. The research is still significant today as it discovered that people who feel that they have a best friend at work are 43 percent more likely to be praised for their job performance.

Almost two decades later, the same finding is true and even is a crucial factor for millennial's happiness.

A survey in 214 by Censuswide and LinkedIn proves that Gallup's research still rings through in the present as 57 percent of the people who participated in the study indicated that having friends at work made them work harder and better, the Forbes reports.

The study focused on 11,500 professionals who were currently working that time. It also included participants from 14 countries.

When the participants were asked if they would exchange a bigger paycheck at a different company for the friendships they have at work, 58 percent of the male workers answered that they would not make the exchange. 74 percent of the female professionals would follow suit.

In another study by Lord Richard Layard, it showed that people on average have reported feeling the same level of happiness in 50 years despite average income more than doubling, The Guardian says.

In conclusion, what the studies say is that we all crave familiarity and friendship. We perform better when we are surrounded by people who we are comfortable with. We also care less about the money and more about relationships.

Modern living have increased mental health problems due to various pressures. It is now more than ever, that millennial's happiness be given priority by simply encouraging the formation of close relationships at work to relieve stress.