Free online resource from the International Labour Organization:
Use of International Law by Domestic Courts
From the Web site’s description:
Use of International Law by Domestic Courts contains a compendium of court decisions in which domestic courts have relied on elements of international law to resolve the cases brought before them]. The compendium is composed mainly of cases falling within the province of labour law but also comprises decisions concerning basic human rights more generally. The decisions are presented in the form of summaries underlining how international law was used in each specific case. At the end of each summary, the full text of the decision is available in the original language.
Each decision is classified according to the following four sets of criteria:
country of origin of the decision
main subject on which international law was referred to
role of international law
type of international instruments used in the decision
Whenever the legal system of the countries included in the compendium stipulates how international law is to be incorporated into national law or the authority to be attributed to it, the decisions of the country in question are preceded by an insert citing the relevant provisions.
Decisions can be accessed through three indexes: by country, by subject and according to the role of international law.
And finally, the compendium is complemented by a library that contains: the texts of ILO Conventions and Recommendations, as well as the texts of other international instruments referred to in the compendium; the work and documents of the international supervisory bodies; and a selection of publications.