Corporate dividend policy is one of the most debated topics in corporate finance. Many researchers have devised theories and provided empirical evidence regarding the determinants of a firm’s dividend policy. The dividend policy issue, however, remains still unresolved as due to the fact that there are so many variables depending upon the type of company, its financial conditions, its industry etc that no single formula could be applicable. Clear guidelines for an ‘optimal payout policy’ have not yet emerged despite the voluminous literature. We still do not have an acceptable explanation for the observed dividend behavior of companies.

During the last fifty years several theoretical and empirical studies have been done leading to mainly three outcomes:

1. The increase in dividend payout affects the market value of the firm.
2. The decrease dividend payout adversely affects the market value of the firm.
3. The dividend policy of the firm does not affect the firm value at all.

However, we can say that empirical evidence on the determinants of dividend policy is unfortunately very complex. Basis on which corporations pay out dividends to the share holders is still an unresolved puzzle. First prominent study that appeared in the literature of finance regarding dividend policy was that of Miller and Modigliani (1961) where they state that there are no deception in a perfect and a rational economic environment. This was the starting point for other researchers to explore dividend payout policy phenomena. Almost all researches that followed referred back to Miller and Modigliani (1961). Various researches were carried out by many researchers to explore the determinants of dividend payout policy, some of them focused on profitability, some on size of the firms, some on growth rate of the firm while others on agency costs. For example researches carried out by Nissim et el (2001), Brook et el (1998), Bernheim et el (1995), Kao et el (1994), and Healy et el (1988) found out a positive association between increase in dividend payout and future profitability. Kalay et el (1986) and Asquith et el (1983) found out that stock returns is positively associated with dividend changes. Sasson et el (1976) conclude that the payout ratio is positive association with average rates of return. On the other hand, studies of Benartzi et el (1997) and DeAngelo et el (1996) find no support for the relationship between future profitability and dividend changes.

On Other side most debated factor affecting dividend policy arguably is agency costs. Jensen (1986). Agency cost argument suggests that cost is reducing by dividend payments and cash flow Rozeff (1982). Researches carried out by Jensen et el (1992), and Lang et el (1989) supported this agency cost hypothesis, while others such as Lie (2000), Yoon et el (1995) and Denis et el (1994) found no support for this hypothesis.

Size of the firm is another factor which seems to have an impact of dividend payout policy. Firms larger in size are considered to have more ability to payout dividends to its share holders. Lloyd et el (1985), and Vogt (1994) pointed that firm size plays a role in clarifying the dividend-payout ratio of firms. They argued that because larger firms are mature and have easy access to capital markets thus they are not really much dependant on internally generated funding which enables them to payout higher dividends.

The purpose of this research is to investigate the dynamics and determinants of dividend policy of oil & gas sector firms in Pakistan. The independent variables selected from the literature include: market capitalization, profitability and annual rate of growth of total assets. Analysis of these variables should reveal there exist an impact of these variables on dividend payout policy of the firms and very nature of the relationship.

The remaining part of this the