Research on individual social responsibility is lacking. This study evaluates the psychological capital (PsyCap), personal social responsibility (PSR), and job satisfaction (JobSat) among 775 Saudi private and public sector workers, married and single. Data was collected electronically using a random and secure sampling and analyzed by SPSS and Amos to test the study's hypotheses. The study lasted from March through October 2022. This study used structural equation modeling, confirmatory factor analysis, and descriptive analysis. Harman's single-factor test showed that six factors had eigenvalues more than 1, and the initial factor's variance explained was 27.88%, far below the 40% threshold. The results presented showed that PsyCap had a significant positive predictive influence on JobSat and PSR. Amos's analysis shows that PSR mediated the association between JobSat and PsyCap. The Bootstrap mediation effect test findings showed that the 95% confidence interval for PsyCap on JobSat extended from 0.18 to 0.34. The study also illuminates processes that mediate the association between PsyCap and JobSat and examines newer concepts like social responsibility and the workplace. The Role of Psychological Capital in Enhancing Job Satisfaction: The Mediating Effect of Individuals' Social ResponsibilityIndividual social responsibility is understudied. This study evaluates psychological capital (PsyCap), personal social responsibility (PSR), and job satisfaction of 775 Saudi private and public sector employees, both sexes, married and single. The SPSS and Amos programs tested the study's hypotheses after randomly and securely sampling data. March to October 2022 saw the research. SEM, CFA, and descriptive analysis were utilized. PSR mediation effect was tested via bootstrapping. All scales and constructs have Cronbach's alpha values over 0.7, indicating reliability. Harman's single-factor test found six factors with eigenvalues greater than 1, and the first factor's variance explained was 27.88%, much below 40%. PsyCap predicted job satisfaction and PSR positively. Amos found that PSR mediated the job satisfaction-PsyCap relationship. The Bootstrap mediation effect test found a 95% confidence interval for PsyCap on job satisfaction of 0.18 to 0.34. The study also explores social responsibility in the workplace and the processes that mediate the relationship between PsyCap and job happiness.