Hi Tom. In order to do teach the Train-the-Trainer courses like the 500 series, you'd have to be hired as an instructor by one of the OSHA Outreach Training Institutes (OTI). Usually, the OTIs are colleges, so they look for folks that meet basic adjunct professor standards, but not always. You can reach out the Director at your local OTI to see if they are hiring. I do know that it's competitive to become an instructor for the 500 series albeit not impossible. I'd like to do it myself at some point too.
Hi Tom. OSHA doesn't pay you...you pay them. You can do either of the following: (1) have open public courses and charge each participant a fee or (2) do private classes for employers for a fee. Then, OSHA OTI will charge you $8 per card. For example, 10 people will cost you $80. Plus, it costs you a couple grand to get your OSHA authorization in the first place and two weeks of your life doing it. OSHA just allows you to be "authorized" which just means that you are allowed to teach 10/30 hour courses because you are a trainer. You can check out www.outreachtrainers.org to see what other trainers are charging in your area. Remember, if you do this for money, you'll owe for taxes, insurance, admin costs, etc., so I would recommend not being one of those unorganized guys who tries to beat everyone's pricing just to get the job. I've turned plenty of work away because everyone wants rock bottom prices...and it's expensive to do this. No one ever went out of business for charging too much! I hope this helps.