Kerr's trial today came after he was implicated in the sale of a "blacklist" of construction workers to contractors.
While blacklisting itself is not illegal, it was alleged that the Consulting Association had committed a criminal breach of the Data Protection Act for failing to register with the Information Commissioner.
Kerr, who was tried in his absence today at Macclesfield Magistrates Court, will be sentenced at the Crown Court after magistrates decided that the ВЈ5,000 fine they could levy was вЂњwholly inadequateвЂќ.
Alan Ritchie, general secretary of UCATT, said: вЂњThe magistrates decision should be applauded. Mr Kerr set out to ruin construction workersвЂ™ lives. He deserves the maximum possible sentence.вЂќ