To provide goods and services, regardless of whether they operate in the for-profit or not-for-profit sector, organizations require inputs in the form of resources called factors of production. Four traditional factors of production are common to all productive activity: natural resources, labor (human resources), capital, and entrepreneurship. Many experts now include knowledge as a fifth factor, acknowledging its key role in business success. By using the factors of production efficiently, a company can produce more goods and services with the same resources.

Commodities that are useful inputs in their natural state are known as natural resources. They include farmland, forests, mineral and oil deposits, and water. Sometimes natural resources are simply called land, although, as you can see, the term means more than just land. Companies use natural resources in different ways. International Paper Company uses wood pulp to make paper, and Pacific Gas & Electric Company may use water, oil, or coal to produce electricity. Today urban sprawl, pollution, and limited resources have raised questions about resource use. Conservationists, environmentalists, and government bodies are proposing laws to require land-use planning and resource conservation.

Labor, or human resources, refers to the economic contributions of people working with their minds and muscles. This input includes the talents of everyone from a restaurant cook to a nuclear physicist who performs the many tasks of manufacturing and selling goods and services.

The tools, machinery, equipment, and buildings used to produce goods and services and get them to the consumer are known as capital. Sometimes the term capital is also used to mean the money that buys machinery, factories, and other production and distribution facilities. However, because money itself produces nothing, it is not one of the basic inputs. Instead, it is a means of acquiring the inputs. Therefore, in this context, capital does not include money.

Entrepreneurs are the people who combine the inputs of natural resources, labor, and capital to produce goods or services with the intention of making a profit or accomplishing a not-for-profit goal. These people make the decisions that set the course for their businesses; they create products and production processes or develop services. Because they are not guaranteed a profit in return for their time and effort, they must be risk-takers. Of course, if their companies succeed, the rewards may be great.

Today, many individuals want to start their own businesses. They are attracted by the opportunity to be their own boss and reap the financial rewards of a successful firm. Many start their first business from their dorm rooms, such as Mark Zuckerberg of Facebook, or while living at home, so their cost is almost zero. Entrepreneurs include people such as Microsoft cofounder Bill Gates, who was named the richest person in the world in 2017, as well as Google founders Sergey Brin and Larry Page.5 Many thousands of individuals have started companies that, while remaining small, make a major contribution to the U.S. economy.