Private company CIS will be brought in to take over a third of services at the National Gallery on Monday of next week.
The campaign to defend the gallery against privatisation plans to hold a protest at the gallery on that day.
Workers were set to strike in December, but gallery bosses ran to the courts with a legal challenge to prevent strikes against privatisation.
The PCS trade union, which represents workers at the gallery, is balloting to take further action as soon as possible starting with a five-day strike.
Most of the workers do not earn the London Living Wage—donations can help the campaign succeed.
Sign the petition against privatisation bit.ly/1kELiGx
Defend PCS union democracy
Support is growing for a statement and motion which calls for the reversal of a decision to suspend elections within the PCS civil service workers’ union.
Socialist Worker supporters on the national executive Paul Williams and Marianne Owens along with PCS Leeds DWP branch secretary Jane Aitchison (all pc) launched the statement and motion.
It calls for the executive to reverse its decision to suspend elections and hold them on a revised timeline.
It also demands an immediate national consultation on the financial crisis the union faces and all the options PCS members face.
And also a campaign on pay and conditions to convince members to sign up for direct debit quickly.
Land Registry branch executive committee passed the motion unanimously on Monday of last week.