In the Broadest sense, there are two kinds of people, or perhaps better, two “ways of being”. Competitive or cooperative.
Very often, the relationship between employer and employees is viewed as a market exchange, or as a trade. We typically think of employment as a buying and selling relationship; as an exchange of X units of labor for Y amount of monetary compensation.
Successful teams are teams that are able to elicit the intent to contribute from each of the individual members of the team. A contribution-focused team is a successful team. A contribution-focused team has team members that are willing to go the extra mile in pursuit of the team’s objective.