https://en.wikipedia.org/wiki/Charlotta_SternCharlotta Stern (Lotta Stern), born 1967, is the CEO of the research institute Ratio and a professor of sociology at Stockholm University who specializes in the sociology of work and organizations. Stern's research is mainly labor market-related. She is the principal investigator of Ratio's labor market program, the purpose of which is to study topics such as the future of work and challenges of the Swedish model.