This working paper provides an overview of a standardised Employee Well-being Survey implemented in four companies in Japan. This survey aligns with international measurement guidelines and practices, including the 2017 OECD Guidelines on Measuring the Quality of the Working Environment, it has been developed under the guidance of the Committee on Statistics and Statistical Policy, and it allows for the calculation at firm level of an equivalent of the Job Strain index, namely the third pillar of the OECD Job Quality framework. The objectives of the study were: i) to pilot the new Employee Well-being Survey at the firm level; ii) to demonstrate the potential of harmonised employee survey data as a source of information on business social performance, with associated benefits for companies, stakeholders, investors, governments and national statistical offices; and iii) to operationalise one element of a proposed framework on measuring non-financial performance of businesses.