There was a must read post about the state of worker freedoms at Human Rights Watch:

The Iranian judiciary should release three women labor activists and a journalist who are still in jail two months after they were detained following a May Day demonstration in Tehran protesting the difficult economic condition workers face, Human Rights Watch said today. The four detainees appear to be detained solely because of their participation in the peaceful assembly.

On May 1, 2019, which is International Labor Day, plainclothes police arrested at least 35 activists who had gathered in front of the Iranian parliament in a peaceful demonstration organized by 20 independent labor organizations, including an independent trade union previously targeted by the government. Most were released on bail in the following days and weeks, but authorities continue to detain activists Neda Naji and Atefeh Rangriz and journalist Marzieh Amiri, on accusations of “disrupting public order” and “acting against national security.” On June 18, authorities re-arrested Anisha Assadollahi, an activist who had been released on bail a few days after her initial arrest on May 1.

“It appears Iranian authorities are punishing these four women solely for their peaceful activism,” said Michael Page, Middle East deputy director at Human Rights Watch. “Iran’s judiciary has the authority to release them and should do so immediately.”

Human Rights Watch has the full story.