If the career path you desire requires additional training or education, do it as soon as you can, before leaving your current job, graduating, or departing military service. You'll never regret the choice to improve yourself and your skills. Think of job classification more in terms of education, training, knowledge, responsibility, experience, and authority levels. Jobs are often classified into three markets or categories. Repetitive tasks on production lines are typical of unskilled labor.
Upward mobility is possible but requires a company willing to train internally.
Responsibility in unskilled jobs is usually restricted to meeting standards established by the company. Pay can be minimum wage or higher. Many skilled jobs require a great deal of responsibility, technical ability and knowledge. If you plan to enter the trades, study labor unions. In some states labor unions have gained a monopoly organizing the trade occupations.