Arising out of a failure to agree the terms and conditions of employment of their members in the employ of members of the Film Laboratories Employers' Association, the Union ordered a general ban on overtime. Some 20 of the employees of Messrs. Humphries thereupon refused to work overtime. The firm took the view that the workpeople concerned were guilty of a breach of contract and dismissed them. I am advised that this action by the employer does not constitute a breach of Article 4 of the Conditions of Employment and National Arbitration Order, 1940. The third part of the Question does not therefore arise. I should add that the dispute as to the terms and conditions of employment of technicians employed in film laboratories has now been referred to the National Arbitration Tribunal for settlement and is therefore sub judice.