Spa Assistant A state-recognized apprenticeship for a Spa Assistant in Colorado is an “earn-and-learn” training model. This type of program combines paid on-the-job training with structured classroom instruction. Apprentices work under the guidance of a skilled mentor to master job competencies while also receiving related technical instruction. Upon successful completion, the apprentice earns a nationally recognized credential from the U.S. Department of Labor. This model provides a clear pathway to a career, ensuring the apprentice gains both practical experience and foundational knowledge.