Greenwich Council staff who went on strike over allegations of bullying plan another two days of industrial action this month.
A team of occupational therapists held a 24-hour strike on May 21, picketing the Woolwich Centre over allegations of bullying, harassment and the suspension of a work colleague accused of being too friendly with staff.
Unite branch secretary Onay Kasab said the union had now issued notice of further strike action on June 11 and 12, including a protest at the council's AGM along with "anti-bullying campaigning across the council".
He said of the previous strike: "Unlike most disputes this wasn't about pay and conditions. Because it was about bullying we had staff coming out to speak to the strikers, saying they supported them and wishing them well for standing up and doing something about it."
A spokesman for Greenwich Council said: "The Royal Borough of Greenwich refutes the allegations made by Unite.
"This isolated case involves differences between workplace colleagues in one team. No whistle blowers have been suspended.
"The Council has carried out an investigation into the management of the team and is dealing with the matter in line with its agreed procedures. It would be inappropriate to comment any further pending the outcome.
"We are committed to ensuring that there is no impact on service delivery and look forward to working with Unite to find a resolution."