People between the ages of 20 to 34 make up roughly a third of the working population, according to the Bureau of Labor Statistics and their attitudes about work differ greatly from previous generations of workers. These younger workers are sometimes called disloyal because they are reluctant to make long-term commitments to an organization. However this lack of commitment is often due to a lack of trust over job security, and as a result many workers see themselves as free agents. This outlook explains why younger workers seem to be more interested in career opportunities and mobility than in long-term company performance.
See "Youthful Attitudes, Sobering Realities", Julie Connelly, The New York Times, October 27, 2003