Eduardo Vargas, seen here at work at the independent Mexican Telephone Workers Union, was fired by Atento for joining the union.
- [John Otis/GlobalPost]

Elizabeth Calvillo, a former Atento employee speaks through a bullhorn outside an Atento call center trying to convince her former co-workers to join the independent Mexican Telephone Workers union.
- [John Otis/GlobalPost]

Atento employee Gerardo-Pena Chavez holds up a leaflet urging him to leave Atento's protection union and join the independent Mexican Telephone Workers Union.
- [John Otis/GlobalPost]

Fired Atento workers leafleting the Atento call center in Mexico City.
- [John Otis/GlobalPost]

Former Atento employee Yoremi Escalona, fired for union activism, tries to convince Atento worker Gerardo Peña-Chavez to join the independent Mexican Telephone Workers Union.
- [John Otis/GlobalPost]