Union activist Juan Carlos Piedra was suspended from his job last week for the second time in recent months.
He turned up at work on Friday to be told that he was suspended and the company would write to inform him of the reasons.
This latest move comes after Juan Carlos won reinstatement in his cleaning job with Office & General (O&G) after it dismissed him in September.
Trade unionists and others launched a powerful campaign in his support, meaning the company offered him a job at the Harbour Exchange building.
O&G then told him he was to be transferred to another company as it had lost the cleaning contract at the building. He has now been suspended by this company.
Juan Carlos and his supporters are continuing the fight for his reinstatement at University College London (UCL), where he worked before he was dismissed.
Juan Carlos’s Unite union, the unions at UCL and Camden Trades Council back him.
Protest in support of Juan Carlos Piedra, 1pm, Thursday 10 December, UCL Quad, (off Gower Street) WC1E