This study aims to examine the influences of psychological capital on informal learning, employability, job performance, and innovative behavior, and to examines the moderated mediation effects of transformational leadership and innovation-oriented cultures on the relationships between psychological capital and employability, job performance and innovative behavior via informal learning. The major findings are as follows; 1) psychological capital was positively associated with informal learning. 2) informal learning had positive effects on employability, job performance and innovative bahavior. 3) informal learning had the partial mediating effects on the relationship between psychological capital and employability, job performance and innovative behavior. 4) the relationships between psychological capital and informal learning was moderated by transformational leadership. Also, transformational leadership moderated the strength of the mediated relationships between psychological capital and employability, job performance and innovative behavior via informal learning, such that the mediated relationships were strengthened by high levels of transformational leadership. 5)innovation-oriented cultures positively moderated the relationship between psychological capital and informal learning. Innovation-oriented cultures also moderated the strength of the mediated relationship between psychological capital and innovative bahavior via informal learning, such that the mediated relationship was stronger when innovation-oriented cultures was high as opposed to when it was low.