The author presents the criteria used in the health care quality assurance systems with special attention paid to the following issues: Quality management system ISO 9000:2000. European Foundation Quality Management. Hospital accreditation. Quality assurance system in occupational health services in Norway "Good OHS". Quality management criteria are regarded as guidelines for functioning of organizations. All presented evaluation systems are based on a common set of criteria, which include: client-patient orientation; advancement of stuff skills; information management; services and management improvement.