The workshop on "Partonic Transverse Momentum in Hadrons: Quark Spin-Orbit Correlations and Quark-Gluon Interactions", co-organized by Duke University, the Triangle Universities Nuclear Laboratory, and the Jefferson Lab Users Group Board of Directors, is one of the science workshops organized to investigate the physics potential that a high luminosity and moderate energy electron ion collider offers beyond the 12 GeV Upgrade of Jefferson Lab. The workshop aspires to articulate the importance of transverse hadronic structure of hadrons in the framework of Quantum Chromodynamics and to identify flagship measurements that can be uniquely carried out with such a machine. The workshop will take place on the campus of Duke University in Durham, NC on March 12 and 13th. We look forward to your participation in this workshop.