In common law jurisdictions, assessors are usually non-lawyers who sit together with a judge to provide either expert advice (such as on maritime matters) or guidance on local practices. The use of assessors nowadays is quite rare. In some jurisdictions, such as Fiji, assessors are used in place of juries. An assessor's opinion or view of a case is not binding on a judge.
Civil law jurisdictions
In Germany, Rechtsassessor ("assessor of law") is a title held by graduates of law who have passed both the first and the second of the two state exams (finishing law school and "the bar") qualifying for a career in a legal profession such as judge or prosecutor, attorney at law or notary public.
In Sweden, a judge who has been a district court clerk for two years, an appeal court clerk for at least one year, a deputy district judge for at least two years and a deputy appeal court judge for one year gets, if he or she is approved, the title assessor. Hovrättsassessor = assessor of the civil and criminal appeal court. Kammarrättsassessor = assessor of the administrative appeal court. Having the degree of assessor is the most common way of getting a constitutionally protected position as a judge (ordinarie domare), but increasingly advocates, prosecutors and doctors of law are also appointed to these positions.
Soviet Union and PRC
In the former Soviet Union and modern People's Republic of China, a judge presiding at trial is assisted by two "people's assessors" drawn much like jurors from citizens in the community. They do not rule on matters of law but can allow or deny objections. When the trial is completed the judge and people's assessors decide on a verdict.
Common law jurisdictions
Serious criminal trials are conducted by a judge sitting with four lay assessors.
S.53 of the High Court Ordinance provides that a judge in the Court of First Instance may sit with one or more assessor who holds special qualifications. It is not normal practice for the court to sit with assessors.
In serious criminal cases (such as murder) appearing before the High Court, two assessors may be appointed to assist the judge. Assessors are usually advocates or retired magistrates. They sit with the judge during the court case and listen to all the evidence presented to the court. At the end of the court case they give the judge their opinion. The judge does not have to listen to the assessors' opinions but it usually helps the judge to make a decision. The assessors may also only make decisions on facts, not on the law, which is solely the authority of the judge.
- Henriksen, Petter, ed. (2007). "assessor". Store norske leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 18 December 2009.
- Peter Duff, "The evolution of trial by judge and assessors in Fiji", The Journal of Pacific Studies, Volume 21, 1997, 189–213
- s.53 Hong Kong High Court Ordinance
- South African Law Reform Commission Issue Paper 26,para 2.9 and 2.10