As the oldest and largest investment Chamber, the OICCI draws on a diverse membership both in terms of sector and geography with the current 200 plus members representing 31 different countries and 14 different sectors of trade and industry.

In its comprehensive function as a facilitator to foreign investors, the OICCI plays a vital role on several fronts. The Chamber is frequently called upon to assist government in policy formulation in the financial, commercial and industrial sectors, particularly where it impacts foreign investment in Pakistan. The OICCI ensures that the voice of its membership is heard in the right quarters and influences policymaking. The Chamber also helps its member navigate difficulties arising due to anomalies in laws or policy implementation.

In order to promote the views of its members, OICCI participates in the policy making process by timely submission of Taxation and Trade Policy proposals developed in consultation with member companies to relevant ministries before announcement of the annual National Budget and Trade Policy.

The Chamber collects statistics and information regarding foreign investment from numerous sources and delivers presentations on investment and business environment to several bodies, such as, prospective investors, foreign trade delegations and trade counsellors.