The purpose of this research was to study process of work behavior effecting on career perspective in vocational life among workers of early adulthood. A questionnaire was given to 253 employees of several Japanese companies with over 300 employees. A multistage path model was proposed a priori which was constructed by five variables: career perspective,work behavior,vocational identity,career adaptability,and meaning of work. Major findings were as follows: (1) not only behavior to step forward but also behavior to think through had an influence on vocational identity and career adaptability; (2) vocational identity affected career perspective the most. In addition,meaning of work was promoted by vocational identity and affected career perspective; (3) work behavior affected career perspective through vocational identity,career adaptability and meaning of work.