The right to strike has been much debated recently. The supervisory bo
dies of the ILO have established clear principles on the exercise of t
his right and admissible restrictions as regards essential services. T
he author summarizes the criteria adopted by the Committee on Freedom
of Association and the Committee of Experts on the Applicaton of Conve
ntions and Recommendations. He then presents a comparative study of ex
isting regulations in Argentina, Brazil, Paraguay and Uruguay, arguing
that the MERCOSUR integration process should allow them to agree on t
he harmonization of their respective labour laws and to align them as
necessary on ILO standards.