It is also clearly a win for the mentee who could follow in the path of a wiser more experienced colleague who can open doors to otherwise out-of-reach-opportunities.
Mentoring differs from coaching, a mentor is voluntary who steers a mentee into assignments that will draw their attention to their senior management, it is also a long-term programme, and the mentee is responsible for their own learning. A coach is a paid role who teaches specific skills and is usually a short -term assignment and is accountable for the learning. A mentor listens a coach directs.
A core principle of the mentoring relationship is that the mentor helps the mentee work out the best course of action and is always supportive and non-judgemental.
Mentees must remain responsible for their own actions; mentors are responsible for giving advise that is unbiased and accept that it may not be followed. Mentoring needs careful planning to ensure the right match of Mentor and mentee. I also recommend training for the mentor to ensure they fully understand their role.