Misconduct: Alcohol policy did not apply to dismissed employee

In Quaker Oats Ltd v Siraj 11.5.99 EAT 280/98, the EAT holds that an employment tribunal erred in law in concluding that an employer's non-contractual policy for employees with alcohol-related problems applied to an employee who was dismissed for turning up for work obviously drunk. The tribunal also wrongly substituted its own view of the case for that of the employer, arrived at after a reasonable investigation.