The qualifications to get a job as a retired teacher depend entirely on the position. For example, if you want to instruct students after retirement, you should have experience with the specific subjects you plan to teach. Other part-time work related to your skills, such as being a volunteer librarian, working at a volunteer bookstore, or at an after-school activity, may not have any specific requirements beyond your professional experience. However, if you want to get a part-time job not related to education, or your professional experience, you may need to have other certifications or credentials.