The 'Mahapadav' meet is being organised by Centre of Indian Trade Unions (CITU) with participation of leaders of central trade unions, industrial federations and MPs.
A "common memorandum" will also be presented to Prime Minister Manmohan Singh spelling out the charter of demands, said CITU president A K Padmanabham.
The demands include regularisation of the large workforce in the country and extending them benefits like pension, gratuity and provident fund.
"The government is exploiting lakhs of workers who are employed in various central government schemes and programmes. They are not recognised as workers and are called social workers, activists, and even given fancy and innovative names like friends, guests, 'yashodas' and 'mamathas' to hide their exploitation," Padmanabham said.
They are not paid minimum wages and have no job security or social security. An overwhelming majority of these scheme workers are women, he maintained.
He said there are about one crore such workers employed in the central government schemes and programmes.
They also include the more than 27 lakhs anganwadi workers and helpers employed in the ICDS programme and around 8.5 lakhs women employed as ASHAs under the National Rural Health Mission, he said.