State law generally requires corporations, limited liability companies, limited partnerships, and various other types of entities to register with the state (usually the Office of the Secretary of State) in order to conduct business in that jurisdiction. In many cases, if your business has a physical presence or employees in a state, it would be considered to be doing business in that state. State statutes usually provide a list of activities that either do or do not constitute transacting business within the state. After referring to the statutes, it may be necessary to consult an attorney to see if your specific actions will constitute conducting business in the state.