Gathering of Sustainability Issue
Taishin has identified 16 sustainability issues that are relevant to the 2018 report. These issues were gathered from diverse sources including GRI, ISO 26000, CDP and DJSI (two of the world's most prominent sustainability surveys), local regulations, signed initiatives, benchmark international peers, and stakeholders. These issues were confirmed by CSR Team meetings.
Determining Material Topics and Boundaries
The materiality matrix uses degree of impact and level of concern as quantitative parameters for the two axis. Degree of impact was determined by the business unit through a series of discussions; these discussions also covered the relevance and impact boundary of each sustainability issue on business operations. Level of concern was determined through survey; stakeholders from 7 categories had participated in the survey, and a total of 383 effective responses were received. To eliminate bias from using only one methodology, Taishin had plotted its matrix using 2 different approaches: average level of concern and high level of concern, and found no significant difference between them. Results of the preliminary analyses were presented to the CSR Committee, and after a series of discussion, the committee was able to determine Taishin's 10 material issues for 2018 that correspond to 12 topics of the GRI guidelines.