A lawyer, according to Black's Law Dictionary, is "a person learned in the law; as an attorney, counsel or solicitor; a person licensed to practice law." Law is the system of rules of conduct established by the government of a society to maintain stability and justice. Working as a lawyer represents the practical application of legal theory and knowledge to solve real problems or to advance the interests of those who retain (i.e., hire) lawyers for legal services.

The role of the lawyer varies significantly across legal jurisdictions, and therefore can be treated here in only the most general terms.

In practice, legal jurisdictions exercise their right to determine who is recognized as being a lawyer; as a result, the meaning of the term "lawyer" may vary from place to place.

* In Australia, the word "lawyer" is used to refer to both barristers and solicitors (whether in private practice or practising as corporate in-house counsel) but not people who do not practice the law.

* In Britain, "lawyer" is used loosely to refer to a broad variety of law-trained persons. It includes practitioners such as barristers, solicitors, legal executives and licensed conveyancers; and people who are involved with the law but do not practice it on behalf of individual clients, such as judges, court clerks, and drafters of legislation.

* In Canada, the word "lawyer" only refers to individuals who have been called to the bar or have qualified as civil law notaries in the province of Quebec. Common law lawyers in Canada may also be known as "barristers and solicitors", but should not be referred to as "attorneys", since that term has a different meaning in Canadian usage. However, in Quebec, civil law advocates (or avocats in French) often call themselves "attorney" and sometimes "barrister and solicitor".

* In the United States of America, the term generally refers to attorneys who may practice law.

· Other nations tend to have comparable terms for the analogous concept.

Responsibilities

In most countries, particularly civil law countries, there has been a tradition of giving many legal tasks to a variety of civil law notaries, clerks, and scriveners. These countries do not have "lawyers" in the American sense, insofar as that term refers to a single type of general-purpose legal services provider; rather, their legal professions consist of a large number of law-trained persons, known as jurists, of which only some are advocates who are licensed to practice in the courts. It is difficult to formulate accurate generalizations that cover all the countries with multiple legal professions, because each country has traditionally had its own peculiar method of dividing up legal work among all its different types of legal professionals.

Notably, England, the mother of the common law jurisdictions, emerged from the Dark Ages with similar complexity in its legal professions, but then evolved by the 19th century to a single dichotomy between barristers and solicitors. An equivalent dichotomy developed between advocates and procurators in some civil law countries, though these two types did not always monopolize the practice of law as much as barristers and solicitors, in that they always coexisted with civil law notaries.

Several countries that originally had two or more legal professions have since fused or united their professions into a single type of lawyer. Most countries in this category are common law countries, though France, a civil law country, merged together its jurists in 1990 and 1991 in response to Anglo-American competition. In countries with fused professions, a lawyer is usually permitted to carry out all or nearly all the responsibilities listed below.

Oral argument in the courts

Arguing a client's case before a judge or jury in a court of law is the traditional province of the barrister in England. However, the boundary between barristers and solicitors has gradually evolved over time. For example, in England, the barrister monopoly covers only appellate courts, and barristers must compete directly with solicitors in many trial courts. In countries like the United States which have fused legal professions, there are trial lawyers who specialize in trying cases in court, but trial lawyers do not have a de jure monopoly like barristers.

In some countries, litigants have the option of arguing pro se, or on their own behalf. It is common for litigants to appear unrepresented before certain courts like small claims courts; indeed, many such courts do not allow lawyers to speak for their clients, in an effort to save money for all participants in a small case. In other countries, like Venezuela, no one may appear before a judge unless represented by a lawyer. The advantage of the latter regime is that lawyers are familiar with the court's customs and procedures, and make the legal system more efficient for all involved. Unrepresented parties often damage their own credibility or slow the court down as a result of their inexperience.

Research and drafting of court papers

Often, lawyers brief a court in writing on the issues in a case before the issues can be orally argued. They may have to perform extensive research into relevant facts and law while drafting legal papers and preparing for oral argument.

In England, a solicitor gets the facts of the case from the client and briefs a barrister in writing. The barrister then researches, drafts, and files the necessary court pleadings, and orally argues the case.

In Spain, the procurator merely signs and presents the papers to the court, but it is the advocate who drafts the papers and argues the case.

In some countries, like Japan, a scrivener or clerk may fill out court forms and draft simple papers for lay persons who cannot afford or do not need attorneys, and advise them on how to manage and argue their own cases.

Advocacy (written and oral) in administrative hearings

In most developed countries, the legislature has granted original jurisdiction over highly technical matters to executive branch administrative agencies which oversee such things. As a result, some lawyers have become specialists in administrative law. In a few countries, there is a special category of jurists with a monopoly over this form of advocacy; for example, France formerly had conseil juridiques (who were merged into the main legal profession in 1991). In other countries, like the United States, lawyers have been effectively barred by statute from certain types of administrative hearings in order to preserve their informality.

Client intake and counseling (with regard to pending litigation)

In England, only solicitors were traditionally in direct contact with the client. The solicitor retained a barrister if one was necessary and acted as an intermediary between the barrister and the client. In most cases a barrister would be obliged, under what is known as the "cab rank rule", to accept instructions for a case in an area in which they held themselves out as practising, at a court at which they normally appeared and at their usual rates.

Legal advice (with regard to all legal matters)

Legal advice is the application of abstract principles of law to the concrete facts of the client's case in order to advise the client about what they should do next. In many countries, only a properly licensed lawyer may provide legal advice to clients for good consideration, even if no lawsuit is contemplated or is in progress.[29][30][31] Therefore, even conveyancers and corporate in-house counsel must first get a license to practice, though they may actually spend very little of their careers in court. Failure to obey such a rule is the crime of unauthorized practice of law.

In other countries, jurists who hold law degrees are allowed to provide legal advice to individuals or to corporations, and it is irrelevant if they lack a license and cannot appear in court.[32][33] Some countries go further; in England and Wales, there is no general prohibition on the giving of legal advice. Sometimes civil law notaries are allowed to give legal advice, as in Belgium. In many countries, non-jurist accountants may provide what is technically legal advice in tax and accounting matters.