Where an employer is consulting with a recognised union on redundancies, must it also consult with representatives of employees who are not members of that union?

No, if an employer is consulting with a recognised union, it does not also have to consult with non-union representatives. Under s.188(1B)(a) of the Trade Union and Labour Relations (Consolidation) Act 1992, it is sufficient for the employer to consult only with trade union representatives, as long as the affected employees are of a description in respect of which the trade union is recognised, regardless of whether or not those employees are members of the union.