The sharia (Islamic) activity has seen a rapid development, not only in its impact on growth in the international community, but also in the history and development of Islamic Law, which is part of The Living Law. Therefore, prompt actions are needed to oversee the growth using the concept, theory, laws and regulations, which are part of the Islamic Economic Law and being part of the National Legal System. One of the legal system principles is the concept of justice that constitutes the supreme goal of the Law, and the Quran promotes fairness and forbids partiality in any transactions. This paper emphasizes the importance of justice which is the goal of law and in the qur’an, justice matters are mentioned in various dimensions. Meanwhile, the concept of justice in the economy is defined as social justice or al mashlahah. Defining Al Mashlahah as social justice in economic dimensions justifies that God’s purposes to reveal various rules including rules implementing economic activities is to achieve justice for all parties. Islam puts Mashlahah as the central idea of maqashid ash shari’a as the justice philosophy in the Islamic perspective is a universal and comprehensive justice. If the ultimate goal in establishing various economic policies is to maintain consciousness of justice then the decision makers should always institute justice for all as the basic policy in implementing al maslahah in economic activities especially in Indonesia.