On Labor Day in Sofia, a march - rally organized by the BSP will also be held. It will start at 11:30 from Lake "Ariana" and will reach the Summer Stage in Borisova Garden.
The Holiday of the Left Press will also be celebrated, with separate stands with literature.
"And we invite everyone who recognizes themselves in the centuries-old battle for labor rights to stand not just shoulder to shoulder with us and other unions and movements, but to show the authorities - political, capitalist, and economic - that there are people who are ready to defend their rights," BSP leader Krum Zarkov told the Bulgarian National Radio.