(1)For the purposes of sections 27 to 31—
(a)a trade union shall be treated as recognised not only if it is recognised for the purposes of collective bargaining, but also if the Advisory, Conciliation and Arbitration Service has made a recommendation for recognition which is operative within the meaning of section 15 of the [1975 c. 71.] Employment Protection Act 1975 ; and
(b)the working hours of an employee shall be taken to be any time when, in accordance with his contract of employment, he is required to be at work.
(2)In subsection (1)—
" collective bargaining " means negotiations related to or connected with one or more of the matters specified in section 29(1) of the [1974 c. 52.] Trade Union and Labour Relations Act 1974;
" recognised " means recognised by an employer, or two or more associated employers, to any extent for the purposes of collective bargaining.