Answer:
Involvement with the organization can lead you from a participant role to a work grup role. For example, If a person gets involve as a volunter with a organization teaching kids in developing countries the volunter might become a great professor and the organization might hire him/her as a part of the work group that manage that program.
Another way of getting a job from being part of an organization is belonging to a professional asociation this organization gives status to the profesional and rise the cahnces of being hire.