Contracted workers in the Department for Business, Energy and Industrial Strategy (BEIS) have voted overwhelmingly for strike action over pay and parity in working conditions.
Cleaners, security guards and caterers are not paid the London Living Wage by Engie and Aramark who are both contractors for BEIS.
The PCS has strongly argued that the scandal of low pay and poor conditions is caused by outsourcing and the union is campaigning to bring these services back in-house.
General Secretary Mark Serwotka said: “This overwhelming endorsement for strike action shows the strength of feeling amongst our members.
“The contractors at BEIS have treated them disgracefully and all our members ask is to be on the same terms and conditions as their BEIS colleagues.
“Ministers at the department need to step in and bring these services back in house as a matter of urgency.”