In continuing professional development (CPD) jobs, you teach courses or lead training programs for professionals who either need credits to renew a professional license or certification or want to add new skills to their repertoire. Many fields require workers to seek continuing professional development, such as medicine, law, banking, education, construction, skilled labor, and business. Although your specific duties vary depending on the organization for which you work and the type of curriculum you teach, there are constants among your responsibilities. Namely, you train workers and assess their competency to determine whether they should remain licensed or certified in their field.