Global warming, commitment to the Kyoto protocol, and accounting disclosures by the largest global public firms from polluting industries

This study evaluates disclosures on pollution and greenhouse gases by firms domiciled in countries that have ratified the Kyoto Protocol compared to others. The study is based on disclosures made in the annual reports, environmental reports, and websites of 120 of the largest (in terms of revenues) public firms from the chemical, oil and gas, energy, and motor vehicles and casualty insurance industries. The study uses content analysis to construct weighted and unweighted disclosure indices. The results show that firms from countries that ratified the Protocol have higher disclosure indexes as compared to firms in other countries. Additionally, larger firms disclose more detailed pollution information. Multinational firms that operate in countries that ratified the Protocol but have their home offices in countries that did not are associated with lower disclosures. This lack of consistency in disclosure is not likely to be helpful in informing shareholders about the social responsibility of their investments.