Middle and remote Ersa workers stop at midnight on Wednesday after the dismissal of 11 employees.
Meanwhile, the meetings are held at the headquarters of the companies.
The Labor Ministry is expected to intervene in the conflict, invoking a meeting.
According to official sources, it is not excluded that compulsory conciliation is dictated.
Only in the interurban areas of Ersa
From Aoita, Secretary-General Miguel Herrera indicated that the force measure only covers the services of this company.
"The company has dismissed 11 workers, saying it is undergoing a restructuring process and paid them only 50% of the appropriate compensation," Herrera said.
The union claims that the dismissed be given to the dismissed and claims that Ersa has not communicated the decision of the unit and is not in a preventive contest.
"This Wednesday we will present a note to the Provincial Ministry of Labor to resolve the situation," Herrera said, who said that so far neither the company nor the provincial authorities have been contacted.