Reporting methodology

Scope

Heijmans’ operations are concentrated in the Netherlands and it reports key figures for these activities in this annual report. Unless specifically mentioned, combined projects have not been included in the non-financial information of this annual report, with the exception of safety-related information, for which Heijmans reports in line with SCC (Dutch: VCA) definitions. The non-financial information of the recent acquisition Van Wanrooij has not yet been included in this report.

Information gathering and verification

Those involved in preparing the content and design of this report held regular consultations in the course of the year. They organised a kick-off session in October at which they shared experiences from the previous year, together with targets and ambitions. At this session, those involved reached agreements regarding content, ambition and planning. These agreements formed the basis for the underlying report. The data used originate from the various administrations, systems and databases in the Heijmans organisation, including a number of management systems and the registration data on operating processes they produce. Examples include Workday for HRM-related aspects, energy management systems, as well as the likes of IRES for accident statistics. Information is also derived from other sources, such as the ERP systems and information from suppliers, including those supplying the company’s vehicle fleet, timber suppliers, and waste processing and energy companies.

Finally, reporting also includes data originating from the certified management systems ISO 14001, ISO 9001, SCC (Dutch: VCA) and SKAO. While Heijmans has implemented various procedures for the reporting of incidents and we have actually received reports of incidents, Heijmans cannot be entirely certain that every incident has been reported.

Reporting methodology

Sustainability-related disclosures have been prepared in accordance with the Global Reporting Initiative (‘with reference’ option). Where possible, Heijmans uses the same terminology used in ISO 26000 and the Integrated Reporting Framework of the International Integrated Reporting Council. The report covers the reporting period 01-01-2023 through 31-12-2023.

Heijmans used the Greenhouse Gas Protocol for the disclosure of CO2 emissions. Heijmans commissioned EY Accountants LLP to provide limited assurance. Chapters 3.2, 4 through 11, 12.2, 13, 15.6, 15.8 en 20.6.10 2, 3, 5, 6, 7.1, 7.2 and 8.4 were included in the scope of this assurance. The assurance report EY issued has been added to this annual report.