Section 92:

92. Factors which shall be taken into account in establishing a bargaining unit include— (a) the nature of the work; (b) the training, experience and professional or other qualifications of the workers concerned; (c) the extent to which they have common interests; (d) the general wishes of the workers concerned; (e) the organisation and location of the work; (f) hours of work, working arrangements and payment systems; (g) the matters to be bargained about; (h) the need to fit the bargaining unit into the pattern of trade union and management organisation; (i) the need to avoid disruption of adequate existing collective bargaining arrangements which are working well; and (j) whether separate bargaining arrangements are needed for particular categories of workers, such as supervisors or workers who represent management in negotiations.