For an educated and specialized workforce, changing employers can result in huge wage gains, I know, I've benefited from this too. However, much of this is due

For an educated and specialized workforce, changing employers can result in huge wage gains, I know, I've benefited from this too. However, much of this is due to the present economy and who knows how long it will last. For an average worker, the path to higher wages is through seniority and institutional knowledge that makes them more valuable. When they change jobs, they are often right back at the bottom, union or no union. They are also competing against young, fresh workers.