Quantification of Interaction Mechanisms: Working Group Summary / D.S. Ensor and J. Porstendorfer -- Exposure Assessment: Summary of Consensus Building Session / D.S. Ensor, T. Godish, K. Ikeda, T. Nathanson, J. Porstendorfer and F. Steinhausler -- Epidemiology and the Real World -- Problems of Complex Exposures: Working Group Summary / J. Spengler and J. McLaughlin -- Attributable Risk of Air Quality Problems: Working Group Summary / J.D. Miller, M. Maroni and A. Pickering -- Multiple Exposure vs Combined Discomfort -- Psychological Approach: Working Group Summary / G. Raw and R. Gammage -- Health Risk and Discomfort: Summary of Consensus Building Session / R. Gammage, M. Maroni, J. McLaughlin, J.D. Miller, A. Pickering and G. Raw -- Building Science -- Design and Mitigation: Summary of Consensus Building Session / H. Levin, S. Brown, F. Gill and M. Schell. Until recently the most common approach to monitoring health risk assessment and management of indoor air quality was to consider each atmospheric pollutant individually. There is now the realisation that both the comfort and the combined health risk may depend not only on the concentrations of individual pollutants, but also on the complexity of the interactions between all the constituents in the air. Further, any mitigation process aimed at one particular pollutant can affect other pollutants as well, decreasing or increasing their concentrations or changing interaction mechanisms. Integrated management strategies should take these processes into consideration and aim at an overall upgrade of the indoor environment. The Indoor Air - An Integrated Approach international workshop, held in Australia, 27 November - 1 December 1994, provided an unequalled forum for the development of an integrated approach to the research, health risk assessment and management of indoor air quality. The aims of the workshop were to discuss strategies for comprehensive characterisation of indoor air; develop a framework for integrated health risk assessment; integrate strategies for controlling and managing all indoor air pollutants; and define areas for future research that will lead to an overall improvement of indoor air quality.