An employer may ‘recognise’ a trade union for a number of different purposes, and at one of a number of different ‘levels’. Where a union has negotiating rights under the highest level of recognition, decisions on matters covered by those rights must be agreed bilaterally by the employer and the union, and may not be taken by the employer alone. This is also usually referred to as recognition for collective bargaining. For further information, see Practice Note: Trade union recognition, under the main section dealing with ‘Levels of trade union recognition’. It is important to note that it is only this highest level of recognition, ie recognition for collective bargaining, that is treated as recognition in law under the Trade