Objectives: To identify factors that affected well-being among British embassy staff based in Japan after the 2011 earthquake, tsunami, and nuclear meltdown. Methods: In-depth qualitative interviews were conducted with 36 members of staff 8 to 9 months after the earthquake. Results: Participants described their crisis work as stressful, exciting, and something of which they were proud. Aside from disaster-specific stressors, factors identified as stressful included unclear roles, handing over work to new personnel, being assigned to office-based work, feeling that work was not immediately beneficial to the public, not taking good-quality breaks, and difficulties with relatives. The radiation risk provoked mixed feelings, with most participants being reassured by contact with senior scientists. Conclusions: Interventions to safeguard the well-being of personnel during crisis work must consider the impact of a broad range of stressors. (Disaster Med Public Health Preparedness. 2014;8:397-403) Key Words: radiation, stress, occupational health O n March 11, 2011, an earthquake of magnitude 9.0 struck the northeast coast of Japan and triggered a tsunami. Waves of up to 39 m travelled inland as far as 6 miles and flooded approximately 217 sq miles of mainland Japan. The cooling system at the Fukushima Daiichi Nuclear Power Plant (150 miles northeast of Tokyo) failed as a result. This failure led to a nuclear meltdown, a series of explosions, and the release of radioactive materials. Approximately 18 500 people were believed to have died from the earthquake and tsunami (mainly by drowning), although no deaths resulting from shortterm radiation exposure have been reported. The disaster also caused extensive damage to buildings and infrastructure, and resulted in widespread concern about the possible spread of radioactive contamination in groundwater.The nuclear emergency led the Japanese authorities to issue an evacuation order for everyone living and working within a 20-km radius of the Fukushima power plant to prevent exposure to radiation. Thousands of people were asked to leave their homes and businesses immediately, in a chaotic and ultimately controversial evacuation. Other countries, such as the United Kingdom and France issued their own advice to their nationals who were in Japan.The British Foreign and Commonwealth Office (FCO) advised British nationals to stay at least 60 km away and to consider leaving the country, while local FCO staff distributed potassium iodide tablets to individuals choosing to remain in northeastern Japan. They also provided regular updates from British scientific authorities, attempted to check on the wellbeing of all British nationals in affected regions, and provided assistance to nationals requiring relocation or emergency travel documents. These activities were undertaken by staff already in Japan, who were supplemented by rapid deployment teams (RDTs) of staff trained to provide additional support during a crisis. While many studies have examined the needs of members of th...