The number of potential job candidates, and therefore costs associated to their hiring has grown significantly in the recent years due to both the complicated situation of the labor market and the increased geographical flexibility of employees. Some initiatives for making the e-Recruitment processes more efficient have notably improved the situation by developing automatic solutions. But there are still some challenges that remain open since traditional solutions do not consider semantic relations properly. We overview those knowledge management techniques that can play a key role in the design of a novel business model that is more attractive for job applicants and job providers.