The Workplace Relations Amendment (Transmission of Business) Act 2004 is a Commonwealth Act that amended the Workplace Relations Act 1996. Its purpose was to deal with what happens to certified agreements when one employer becomes the successor, transmittee or assignee of the whole or part of another employer's business.
The amendment inserted a new section 170MBA into the Workplace Relations Act 1996 and also changed related transmission of business provisions. The key practical rule was that an incoming employer would be bound by the certified agreement in a transmission of business situation, subject to any order made by the Australian Industrial Relations Commission. The Commission was given power to order that the incoming employer was not bound, or was bound only to a specified extent.
For most businesses today, this is not the main workplace law framework they deal with day to day. The Fair Work Act 2009 now governs most current employment matters. Even so, this Act can still matter in a business sale, asset transfer, internal restructure or historical employment review if an older certified agreement under the Workplace Relations Act 1996 is still relevant to the employees or business being transferred.