Serhiy Rudnitsky, a line manager at a Coca-Cola Ukraine bottling plant, said he could no longer stomach his working conditions.

According to him, the pay was low, vacation days were sharply curtailed and individual workers were often asked to cover the duties of multiple employees. At the same time, managers were ready to pounce on the slightest mistake, Rudnitsky told the Kyiv Post.

A Coca Cola spokeswoman told the Kyiv Post that the company conducts its business fairly and honestly, follows the highest ethical standards in the country and complies with all the norms of Ukraine. She added that the company provides a fair salary and a variety of incentives to employees.

Rudnitsky and his comrades would beg to differ. Towards the end of 2016, Rudnitsky gave himself a crash course in labor rights and formed a union. Less than two years later, it went on to win several important victories.