Oishi et al. (2017).

Oishi, S., Yagi, A. (八木彩乃), Komiya, A. (小宮あすか), Kohlbacher, F., Kusumi, T. (楠見孝), & Ishii, K (石井敬子). (2017). 
Does a major earthquake change job preferences and human values? 
European Journal of Personality, 31, 258-265. 
doi: 10.1002/per.2102
Does a major natural disaster change human values and job preferences? The present studies examined whether the experience of a natural disaster experience shifts people’s values and job preferences toward pro-social directions. In Study 1 (cross-temporal analysis), we analysed job application data in nine cities in Japan over 12 years and found that the popularity of pro-social occupations (e.g. firefighter) increased after the Great Hanshin–Awaji Earthquake in 1995, in particular the area hit hardest by the quake. In Study 2 (a large national survey), we found that Japanese respondents who had experienced a major earthquake are more likely to hold a pro-social job than those who never experienced a major earthquake. Together, the current findings suggest that the experience of a major natural disaster shifts human values from the egocentric to the allocentric direction, which in turn could result in a social structure that values pro-social occupations.