Workers from the Bulgarian lead and zinc smelter OTZK blocked a section of the Kurdzhali - Haskovo road, in southern Bulgaria, for half an hour on Monday with demands to be paid their wage arrears.
The workers' unpaid wages for several months add up to nearly 1 million levs ($680,000/511,000 euro), state-run Bulgarian News Agency (BTA) reported.
The workers threatened to block the road every day between 9:30 a.m. and 10:30 a.m., and if their demands are not met, they plan to block an intersection of five major roads, BTA reported, quoting a trade union representative.
OTZK's owner Valentin Zlatev sold the nearby mine Gorubso-Madan over the weekend, following nearly a month of miners' protests over unpaid wages.
Prime minister Boiko Borisov and agriculture minister Miroslav Naidenov will meet with the protesters in Kurdzhali on Tuesday, the government's press office said.