The paper focuses on corporate social capital and analyzes the mechanisms in which it influences employee efficiency. The author proposes a model to examine the relationship between social capital and employee efficiency. Łopaciuk-Gonczaryk offers a synthesis of available literature on the subject, with a special emphasis on some of the most controversial problems in this area. The paper describes two types of corporate social capital: bonding capital and bridging capital. They are usually analyzed separately by economists, but Łopaciuk-Gonczaryk looks at them together while examining the influence of social capital on efficiency. She also zeroes in on the interaction between bonding and bridging capital. The theoretical analysis made in the paper should be followed up by empirical research, the author concludes.