Business law encompasses all of the laws that dictate how to form and run a business. This includes all of the laws that govern how to start, buy, manage and close or sell any type of business. Business laws establish the rules that all businesses should follow. A savvy businessperson will be generally familiar with business laws and know when to seek the advice of a licensed attorney. Business law includes state and federal laws, as well as administrative regulations. Let's take a look at some of the areas included under the umbrella of business law.