OS Kovo was established 1990 and is representing 160000 trade union members in the Czech metalworking sector.

Lucie Studnicna is international secretary at OS Kovo.

Zetor, a.s. is the biggest agricultural engineering company in the Czech Republic dealing with research, development, manufacture and marketing of Zetor agricultural tractors. The Zetor Company's headquarters and production plants are located in Brno.

Alois Kazelle is the chairman of the works council and OS Kovo representative at Zetor.