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Mayer Brown

1999 K STREET, NW, WASHINGTON, DC 20006-1101, USA
Work +1 202 263 3000
Fax +1 202 263 3300

Dan Masur

Work +1 202 263 3226
Mayer Brown

Work Department

Corporate and Securities.


Dan Masur has represented national and international clients in a broad range of on-shore, near-shore, and offshore information technology and business process sourcing transactions involving global and niche outsourcing providers, offshore captives and various hybrid structures. His representative business process sourcing transactions include the outsourcing of finance and accounting functions, human resource/employee services, customer relations management, recruiting, logistics, collections, procurement, e-commerce processing and support, financial services operations, and other business processes and functions. His representative information technology transactions include the outsourcing of IT infrastructure services and support, data center services, application development and maintenance, network management and support, help desk/call center services, and telecommunications services. Dan has represented established and emerging companies in many different industries, including aerospace, defense contracting, electronic commerce, financial services, pharmaceuticals, insurance, health care, banking, life sciences, chemicals, consumer products, manufacturing, oil/gas, real estate, forestry products, telecommunications, information technology, and utilities/electrical power.


Georgetown University Law Center, JD, 1977; Editor, Georgetown Law Journal Marquette University, BA, 1974.

United States: Media, technology and telecoms


Within: Leading lawyers

Daniel A. Masur - Mayer Brown

Within: Outsourcing

Mayer Brownprovides the perspective and mentoring needed to be a successful and thriving business’.  Indeed, headed by Chicago-based Brad L. Petersen, the team ‘proactively guides its clients through the present issues, while still making sure that the long-run is secure’. The ‘very hard working’ Washington DC-based David L. Beam and Chicago-based Elizabeth A. Raymond advise American Express on the outsourcing of its various assets of its alternative payments and prepaid business. Other key figures in Washington DC include Daniel A. Masur and Linda L. Rhodes (who is ‘always responsive’), while Chicago-based contacts include Joe Pennell, Rebecca S. Eisner and senior counsel Paul J. N. Roy. Chicago-based Lei Shen was promoted to partner in January 2018, and Michelle Ontiveros Gross, who is based in Palo Alto, joined from Davis Polk & Wardwell LLP in September 2018.

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