Insurance yes - general liability and professional liability. Your tools and any parts/materials you keep on hand need to be insured for damage and loss too.
But the biggie, assuming you are working out of your motorhome, is that it will be considered a commercial vehicle with all that entails. That means business specific loss, damage, and liability on your coach. You may need a CDL, and depending on your rig’s weight you may get to become familiar with weigh stations across the country.
Then, of course, there are the accounting and tax requirements.
So, do you want to deal with all of that now that you’re retired? None of it is hard, but it can be a lot of work on top of the work you get paid for, and no small expense. I have a 1-man tech consulting business that I set up after I retired. That’s a little simpler since my only asset is my brain (a dubious asset to be sure
) and I don’t work when we’re travelling.
A lot of folks do work out of their RVs without worrying about the legal bits. The risks are low that they’ll get caught, but the consequences could be catastrophic if they did.
In any case, go for it if it’s something you really want to do!
Regards,
Randy