"..... there is a generally accepted view in industrial relations that, in cases where the employees are represented by an independent union recognised by the employer, [and that was the case here] reasonable employers will seek to act in accordance with the following principles:
"1. The employer will seek to give as much warning as possible of impending redundancies so as to enable the union and employees who may be affected to take early steps to inform themselves of the relevant facts, consider possible alternative solutions and, if necessary, find alternative employment in the undertaking or elsewhere.