In order to become an attorney, one must first obtain an undergraduate (four year) degree. Law schools require this and they may prefer certain degrees over others, but generally a strong candidate may choose to major in anything for this degree. Once admitted into law school, the program usually lasts three years for a juris prudence degree. This is the minimum educational requirement for practicing law, though some students continue all the way to a doctorate in law. Additionally, the candidate must pass the bar examination before legally being able to practice law. The specific type of bar exam varies by state and one state may or may not recognize the bar exam passed in another state.
Corporate attorneys plan, review and/or advise on the inception of corporations to ensure that all applicable laws and regulations are adhered to. They are also intrinsically involved with every step of a possible merger or hostile takeover. Expanded operations or new ventures of an existing company require financial, marketing and logistical planning, but issues such as permits, licenses, franchising and regulation require legal counsel.