I realized what happened. They should have just sucked it up and gotten it over with, but now that it is after the fact, they should still be obliged to do the work with or without the snake being there. I think as a courtesy, knowing that some people will be nervous/afraid of our hobby, you should offer to have someone there who is comfortable with the snake to ....

Show the worker that the snake cannot escape.
If they get over their fears, let them touch it etc to perhaps calm their nerves.
Offer to take it upstairs/in another room for a quick handling session while they do their work.