The five trade unions under the banners of CITU, INTUC, BMS, HMS and AITUC will participate in the nation-wide proposed strike, which will cover Coal India Ltd and Singareni Collieries.
"We have served strike notice to press our demands," BMS affilited ABKMS president B K Rai said.
The ongoing salary negotiations have been on for several months now although and revised salaries for workmen were supposed to be implemented during June last year, unions claimed.
The National Coal Wage Agreement (NCWA) IX expired in June last year and NCWA X is overdue," he said.
He alleged that the formation of Joint Bipartite Committee for Coal Industry (JBCCI) is being delayed by the coal ministry.
Coal India, which is struggling with growing pithead stock and muted demand from the power sector, has not reacted on the strike notice yet.