3. CPR Instructor
Number 3 on our list of highest-paying part-time or side jobs for retired firefighters is the job of CPR Instructors that work independently and teach lifesaving skills and CPR techniques. You need to get certified first in order to consider this job, but it could be the part-job you’re looking for. You also must be good at passing knowledge to students and be able to speak in a clear voice. The average pay rate for a CPR Instructor is $18.23.