Change orders issued during the construction of the second national highway in Taiwan have been categorized depending on whether they originate from owner, design consultant, on‐site contractor unit, or external parties. A total of 34 change order causes are found for this construction project. Grey relation analysis (GRA) was used in this study, and change orders in the second national highway construction project in Taiwan are characterized by the following conclusions: (1) poorly executed design drawings, policy changes and new management requirements are not important causes of change orders; and (2) more roadways should be designed as viaducts to avoid levying more land and negotiating with landowner.

The international construction industry has long experienced high rates of occupational incidents resulting in serious injury and death. The high rate of fatal construction accidents has clearly highlighted the importance and urgency of safety management improvement for building and construction sites. This paper analyzed 33 nominated success factors of the site safety management (SSM) of building construction projects using Principle Components Analysis (PCA) to extract the success factors (SFs) of SSM in Taiwan. The internal relationships among these SFs were further explored using Structural Equation Modeling (SEM) to examine the underlying relationships. The results of this study indicate that there are moderate correlations present between the selected SFs for SSM. Management behaviors, a safe work environment and safety resources, the safety behaviors of workers, and prevention and remedial actions were found to be the major influencers for SSM performance. Furthermore, the study shows that SSM in Taiwan is still overly focused on safe working conditions, to the detriment of workers’ safety perception and training. Further work is required to ensure that safety programs are agile enough to understand and adapt to the factors which influence SSM outcomes.

This study investigates multilevel differences in safety climate (SC) perception dimensions between management and laborers on Taiwanese construction sites. With Taiwan’s high rate of construction site safety incidents, implementing successful safety strategies requires understanding differences in SC perceptions between management and laborers. This study used a structured SC questionnaire with responses from 74 managers and 261 laborers. The analysis of collected data includes (1) descriptive statistics comparing the selected dimensions; (2) Pearson correlation analysis examining relationships between SC perception dimensions; (3) t-test and one-way ANOVA to assess relationships between the respondent’s background and SC perception dimensions; and (4) Post-Tukey comparison analysis to compare the SC perception differences between management and laborers. The results indicate that management-level staff show a higher degree of SC perception than laborer-level staff. This level of SC perception varies between individual dimensions. The strongest convergence between the two groups is observed in the dimension of ‘workmate care of each other’, and the greatest divergence is found in ‘risk decision making’. Previous studies regarding SC perception in Taiwan specifically focus on construction workers and neglect the differences in perception between management and laborers. The outcomes of this study contribute to the understanding of multilevel SC perceptions, which can be used in the development of targeted strategies to improve SC on construction sites.