UNOP has worked in close collaboration with the United Nations Foundation to further promote and implement partnership advisory services and outreach initiatives, and foster innovative strategies for engaging non-state actors with the UN System. The Office has also brokered and coordinated strategies to strengthen the Organization's expertise and capacity to engage corporations, foundations, and individuals in UN causes and to support the United Nations system in its advocacy and outreach efforts through partnership building.

In the last decade the number of private sector entities who approached the UN seeking advice on how to engage and provide assistance has increased significantly. Different sized companies, producing a wide spectrum of goods and services, have approached the Office to offer help or to seek advice on how to join the UN in finding sustainable solutions to some of the world's most challenging problems.

Although most of the private sector companies and foundations interested in increased engagement with the UN System are based in developed countries, those with origins in developing countries has been increasing steadily. The Office has received strong interest in partnering in United Nations-led poverty reduction, disaster prevention, education, health and environmental programmes, as well as disaster relief and humanitarian assistance, in the least developed countries.