SUMMARY
This paper presents a framework for using virtual worlds in the construction of teaching platforms for just-in-time training. In the critical economic situation that many companies are currently living, the need to update skills without leaving the workplace has become urgent. Employees are demanding training for higher performances, knowledge and skills, without requesting time to attend university, or leaving their work behind. In this context, the use of virtual worlds has become the way knowledge is shared and accessed, as virtual groups become learning communities. The potential of Second Life as a space to learn and be trained are explored. The characteristics and capabilities of virtual worlds for teaching and learning are examined, the role of the virtual tutor is analyzed, and further areas of research and development are presented.