“The special protection afforded by para. 6(4)” of the 1975 Act “… to trade union activities must not be allowed to operate as a cloak or an excuse for conduct which ordinarily would justify dismissal; equally, the right to take part in the affairs of the trade union must not be obstructed by too easily finding acts done for the purpose to be a justification for dismissal. The marks are easy to describe, but the channel between them is difficult to navigate.”
“When using facilities provided by the employer for the purposes of communication with their members or their trade union, union representatives must comply with agreed procedures … in respect of access to and use of company information. The agreed procedures will be either those agreed between the union and the employer as part of an agreement on time off … or … general rules applied to all employees in the organisation. In particular, union representatives must respect and maintain the confidentiality of information they are given access to where, the disclosure would seriously harm the functioning of, or would be prejudicial to, the employer’s business interests. … Union representatives should understand that unauthorised publication risks damaging the employer’s business, straining relations with the representative body concerned …”