This paper shows disciplinary and theoretical variety of different approaches to understanding the concept of human capital. It is assesed through different contexts such as labor market, educational and organizational environments, with a purpose of a holistic approach. In the conditions of contemporary society it is becoming submissive to a growing usage of social network sites, which is significantly changing patterns of social behaviour and practices. Networking, at a global level, ensures communication and interaction are transcending past physical limitations, resulting in new possibilities of human capital development as a value of a person. Hence, studying human capital in an online environment demands studying social capital in terms of a value that arises from relationships and networking, and represents a strong influence on accumulation of human capital. A mixed methodology research has been done, with a goal of examination of presence and nature of social capital on social network sites, explicating its relation to human capital and giving guidelines for development perspectives of human capital. The quantitive method has examined the presence and the nature of Facebook connections, as it is the network with the largest number of users and various possibilities for interaction. On the other hand, LinkedIn is a social network with an aim of managing one’s career thorugh online networking, and as such it provides an ideal environment for defining the relationship between social and human capital, as well as possibilities of developing human capital, which is done by means of visual analysis of the LinkedIn interface and functionallity.