The three-day strike by BSNL workers from December 1 will not affect the services, but administrative work, including payment of bills, officials said here today.

Over three lakh workers under the banner of the Joint Action Committee of BSNL Associations/Unions of executives and non-executives would take part in the nation-wide strike opposing disinvestment, proposal for voluntary retirement of one lakh employees and seeking financial viability of the state-run company.

"The entire workforce is completely against disinvestment since it is neither necessary nor beneficial to BSNL," North-East BSNL Employees Union Assistant Secretary Swapan Chakraborty said here.

He said the revenue and market share of BSNL has gone down mainly due to lack of mobile equipment, the tender for which has been continuously cancelled by the government, making acute capacity crunch.

"While there are no restrictions on the private telecom companies, various restrictions are put on BSNL in purchase of equipment and other related matters. The government is also discriminating BSNL in case of taxes to be paid," Chakraborty alleged.

He also said the absorption issue of officers who are on deputation to BSNL for the last 10 years have not been settled so far, creating roadblocks on development and expansion.

"The pensioners who retired before 2007 are denied pension revision while the existing employees are denied their due increase in IDA fixation," he said.

The employees are also demanding refund of the Rs 18,500 crore paid to government towards 3G and broadband wirless access (BWA) spectrum allocation charges.