The RAND National Defense Research Institute assisted the National Geospatial-Intelligence Agency NGA in understanding how its workforce can work in unclassified environments, including outside Sensitive Compartmented Information Facilities SCIFs. This is the first of two reports from the project, and it examines literature about telework and telework practices from across government agencies. This report will be of interest to government leaders who are currently implementing telework or considering implementing telework. The report identifies technological, legal, policy, financial, and security considerations and examines lessons learned from seven different agencies. RAND selected federal agencies that had telework programs in place, agencies whose employees handle sensitive or classified information, and agencies with data publicly available about these programs. These agencies were the Federal Emergency Management Agency, General Services Administration, Internal Revenue Service, National Aeronautics and Space Administration NASA, National Science Foundation, Nuclear Regulatory Commission, and United States Patent and Trademark Office. This research and analysis was conducted between April 2016and April 2017.