She studies work-related sleep deficiency as a CDC-funded (National Institute for Occupational Health and Safety) researcher, where she is finding ways of improving sleep quantity and quality in shiftworkers and those working long work hours. She is also interested in the relationship between sleep and treatment outcomes in patients with chronic illness. She provides cognitive-behavioral therapy for insomnia at the University of Maryland Sleep Disorders Clinic. She has mentored several PhD students with interests in sleep and fatigue, and infuses sleep content into the doctoral courses that she teaches. She is a fellow in the American Academy of Nursing.