Where arrangements ("subscription deduction arrangements") exist between the employer of a worker and a trade union relating to the making from workers' wages of deductions representing payments to the union in respect of the workers' membership of the union ("subscription deductions"), the employer shall ensure that no subscription deduction is made from wages payable to the worker on any day unless—
A worker withdraws an authorisation given for the purposes of subsection (1), in relation to a subscription deduction which falls to be made from wages payable to him on any day, if a written notice withdrawing the authorisation has been received by the employer in time for it to be reasonably practicable for the employer to secure that no such deduction is made.
A worker's authorisation of the making of subscription deductions from his wages shall not give rise to any obligation on the part of the employer to the worker to maintain or continue to maintain subscription deduction arrangements.
In this section and section 68A, "employer", "wages" and "worker" have the same meanings as in the Employment Rights Act 1996.