MahmoodReza Khaki - Department of Accounting, Kish Branch, Islamic Azad University, Kish, Iran Member of Institute of Chartered Accountants

Abstract: Strategic system of company consists of a set of processes, customs, policies, laws and entities which affects similarly on managing, directing and controlling and finally it pays attention to all stakeholders rights. The need for this system can be expressed in terms of agency theory. Thus, ownership separation terminates from management to agency problem. The issue shows the necessity of controlling management by stockholders and causes heavy expenses for these controls which can be expressed earning management as a method for achieving organizational goals in this strategic system. The research sought to examine the level of financial information disclosure voluntarily by companies and its relationship with some strategic parameters of company, So that we considered the relationship between 5 non – financial properties of listed companies in Tehran Stock Exchange and their financial reporting quality. Voluntary disclosure quality was measured by a proxy consists of 139 items based on Iranian Accounting Standards and other laws related to disclosure and its possible association with firm size , type of auditing firm, ownership structure, earning quality and percentage of non – aligned members of company was measured using regression model. According to the average of variables, the results indicate that disclosure level is more in the companies have lesser non – aligned members and ownership concentration. Generally, there is a reverse relationship between disclosure level and non –aligned members in board of directors and ownership concentration.

Voluntary Disclosure, Ownership Concentration, Non – Aligned Members in Board of Directors