It is common for safety consultants and training companies to offer a "Trainer The Trainer" class, video, or certification, but these are not officially recognized or required by OSHA.
For most training subjects, the Trainer just needs to meet certain experience requirements, and be designated by the employer.
Example - Forklift Trainer Requirements
All operator training and evaluation shall be conducted by persons who have the knowledge, training, and experience to train powered industrial truck operators and evaluate their competence. - 1910.178(l)2(iii)
Notice there is no mention of a "Train The Trainer" certification.
Example - Fall Protection
The employer shall assure that each employee has been trained, as necessary, by a competent person qualified in the following areas: 1926.503(a)(2)
In this case, OSHA just says the trainer must be "competent".
"Train The Trainer" courses and certifications can be a useful tool for teaching an employee to be a trainer, but they are not official designations, and therefore their is no "expiration date" as it relates to OSHA requirements.
I have a trainer trainer certificate for about 6 years I have never used it do I need to retake the course
Extraordinary Article it its truly useful and creative update us as often as possible with new overhauls. its was truly important. much appreciated. CPD TRAIN THE TRAINER ROMFORD
Faycal Amoud Ali
I’m a safety trainer at Camp Lemonnier Djibouti HOA and I need to be a certified trainer. thanks