Legal systems around the world elaborate legal rights and responsibilities in different ways. A basic distinction is made between civil law jurisdictions and systems using common law. Some countries base their law on religious texts, while in others traditional customary law or Socialist legal theory are strong influences. Scholars investigate the nature of law through many perspectives, including legal history and philosophy, or social sciences such as economics and sociology. The study of law raises important questions about equality, fairness and justice, which are not always simple. The most important institutions for law are the judiciary, the legislature, the executive, its bureaucracy, the military and police, the legal profession and civil society.

Practice of Law

In its most general sense, the practice of law involves giving legal advice to clients, drafting legal documents for clients, and representing clients in legal negotiations and court proceedings such as lawsuits, and is applied to the professional services of a lawyer or attorney at law, barrister, solicitor, or civil law notary. However, there is a substantial amount of overlap between the practice of law and various other professions where clients are represented by agents. These professions include real estate, banking, accounting, and insurance. Moreover, a growing number of legal document assistants LDAs are offering services which have traditionally been offered only by lawyers and their employee paralegals. Many documents may now be created by computer-assisted drafting libraries, where the clients are asked a series of questions posed by the software in order to construct the legal documents.

In the United States, the practice of law is conditioned upon admission to practice of law, and specifically admission to the bar of a particular state or other territorial jurisdiction. The American Bar Association and the American Law Institute are among the organizations that are concerned with the interests of lawyers as a profession and the promulgation of uniform standards of professionalism and ethics, but regulation of the practice of law is left to the individual states, and their definitions vary.

In the United States, the rules of professional conduct generally prohibit an attorney from assisting a non-attorney from engaging in the unauthorized practice of law. An attorney therefore may not partner with or split fees with a non-attorney in the performance of any sort of legal work. Furthermore, an attorney may not employ a disbarred or suspended attorney in a legal practice where former clients of the disbarred or suspended attorney will be represented.