Abstract

During recent decades, the growing trend of industrial progress on one hand and the limitation of natural and environmental resources on the other hand have drawn the attention of human society to the issue of environmental protection, as well as the increasing demand of stakeholders from companies to accept social responsibilities. It encourages people to get involved in environmental and social responsibilities. Therefore, considering the importance of environmental information disclosure; This research has investigated the effect of product market competition on the disclosure of company's environmental information, emphasizing the role of management ability in Tehran Stock Exchange during the period of 2013 to 2019, using the information of 125 companies. Hypotheses were tested using multiple regression and tabular data arrangement. The results showed that product market competition increases the disclosure of companies' environmental information. In other words, in the conditions of existence of a competitive market, the amount of disclosure of environmental information by companies increases. The presence of competition in the market leads to an increase in transparency and a reduction in information asymmetry, because similar and comparable information can be obtained from other competitors active in the market and used to verify the accuracy of the claims and information provided by the company's management. Contract. This increase in transparency leads to an increase in financial performance. The results also indicated that in companies with high-ability managers, the positive relationship between product market competition and environmental disclosure is intensified.