Abstract: Objective To explore the effects of individual characters and work stress on job involvement.Methods A total of 542 employees from 20 companies were tested with Employee Stress Scale and Job Involvement Scale.Results With factor analyses,we found that there were five dimensionalities for work stress,named workload,working conditions and requirement,responsibility,organizational climate,and role-stress; job involvement was composed of four dimensionalities:vigor,dedication and absorption,organizational support,and efficacy.There was a significant gender difference in role-stress(t=2.27,P< 0.05).There was a significant correlation betw een organizational climate stress and job involvement(r=-0.154,P< 0.01).With hierarchical multiple regression,we found that organizational climate stress could significantly predict job involvement(β=-0.11,P< 0.01) and its sub-dimensions of vigor (β=-0.11,P< 0.01),organization support(β=-0.14,P< 0.01),and dedication and absorption(β=-0.11,P< 0.01).Conclusion Male knowledge workers experienced more stress from work role identity.And there was a significant negative effect of work stressors on job involvement.