Penalty discipline: require show cause notice and proportionate sanctions, with limits for minor or rectifiable errors. Penalties require a show cause notice and proper hearing; they must reflect the totality of facts and be commensurate with the breach, and orders must specify the nature of the breach and statutory provision. Section 68 precludes substantial penalties for minor breaches, procedural breaches, and easily rectifiable errors apparent on record made without fraud or gross negligence, and provides that prescribed fixed penalties in the law apply.