TR071: Humanware, Human Error, and Hiyari-Hat: a Casual-chain of Effects and a Template of Unsafe Symptoms

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Abstract/Contents

Abstract: For many years, the Japanese construction industry has practiced several different accident-prevention activities. In spite of these safety prevention activities, occupational accidents recur. Why? This paper reports on a safety survey of construction workers in the Japanese construction industry. The survey had 7955 responses; 2588 responses reported experiencing "Hiyari-Hat," or Near-Miss accidents. These respondents also reported on the nature and apparent causes of their near-miss accidents. In this paper, we found most accidents occur because of "poor humanware," whene, "humanware" is defined as a function of leadership, followership and the reciprocal interaction between the two. We conclude that the underlying causes of "Hiyari-Hat" often include "poor humanware" and most frequently end with human error of individual workers. This paper proposes a "Hiyari-Hat Model" which describes a "Causal-chain of Effects" and presents a "Template" that summarizes "Unsafe symptoms" among humanware, human error and Hiyari-Hat. It enables first-line employees to monitor and diagnose their own behavior systematically on a timely basis and to easily translate the results of the diagnosis into practical day-to-day accident prevention activities.

Type of resource	text
Date created	August 1992

Subject	CIFE
Subject	Center for Integrated Facility Engineering
Subject	Stanford University
Subject	Accident-Prevention
Subject	Human Error
Subject	Humanware
Genre	Technical report

Location	https://purl.stanford.edu/zp585yn6972

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.

Preferred Citation: Nishigaki, Shigeomi and Vavrin, Jeannette and Kano, Noriaki and Haga, Toshiro and Kunz, John and Law, Kincho. (1992). TR071: Humanware, Human Error, and Hiyari-Hat: a Casual-chain of Effects and a Template of Unsafe Symptoms. Stanford Digital Repository. Available at: http://purl.stanford.edu/zp585yn6972

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