Okay - a slightly alarming (and inaccurate) headline. It's not the role that is being abolished, but the title which is being changed.
From tomorrow (yes, a Saturday!), employment tribunal chairmen become known as Employment Judges.
This change, which has received virtually no publicity, is contained in para. 36 of Schedule 8 to the Tribunals, Courts and Enforcement Act 2007. The commencement order is here.