Becoming an apprentice is a great way to launch a career in a new field on a faster track than traditional, classroom-only learning. Apprentices are full-time employees who earn a living as they learn a new trade or skill. Programs can require on-the-job training alone or a combination of classroom and work-based learning. Industries that offer apprenticeships include construction, Hvac, retail, energy, water treatment and public utility and medical. Many apprenticeship tracks help prepare people for licensure tests or any required credentials in their fields. Due to the wide range of apprentice opportunities, lengths and education requirements vary, but most programs range from one to six years.