Trade unions in Argentina say that they will fight together to maintain workers' rights in the face of an "attack" by President Mauricio Macri.
The Association of Labor Lawyers, political, social and union leaders criticized Macri for describing workers' lawsuits as a "mafia" industry last month.
The General Secretary of the Argentine Workers' Central Union CTA Pablo Micheli is calling for a national strike as a show of unity.
Speaking at a meeting in the capital Buenos Aires, Micheli stressed the need to defeat what he called "this brutal offensive against the workers" over the lawsuits as well as wage levels and layoffs.
And he said that some of the government's action reminded him of the last military dictatorship.
The Association of Labor Lawyers' president Matías Cremonte said its members will "resist this fierce offensive that, with the excuse of attacking the lawyers, in fact, seeks to attack the rights of workers."
Fifty other organizations have been taking part in a rally on Wednesday night.
They say they must defend labor rights against the neoliberal policies Macri.
And they reject of what they claim has been the criminalization of social protest.
Meanwhile, teachers in Argentina are threatening to take further action over pay and conditions.
The head of the Union of Education Workers Eduardo Lopez said that if the government does not call for negotiations on wage agreements, they will "go on strike."
Thousands of teachers took to the streets for a major 24-hour protest on June 14.
Their demonstrations against cuts to education, salary decreases and school closings began in March.