Hundreds of workers at social housing firm Connaught, which went into administration last week, were sacked in a conference call and given no chance to complain about their "appalling" treatment, it was claimed today.
The GMB union said 300 workers were told to call a number after the firm went into administration and were collectively told they were losing their jobs.
The union is making an official complaint to administrator KPMG over the way workers were treated.
A spokesman said: "One of our members was on her way home when she received a voicemail telling her to log on to a conference call with the administrator.
"When she called, there were 300 other people from across the country and they were all told that they were being sacked with immediate effect.
"KPMG refused to answer any questions and apparently all hell broke lose. We will be making an official complaint about this appalling treatment."