If that is expected of service animals, then there shouldn't be service animals, IMO. This day and age there are plenty of other tools available. A dog's refusal could be due to many things - a sound they hear that we don't, for instance. That could be incredibly painful for the dog.
Service Dogs are sentient living beings, not robots. Service Dogs with a good relationship with their handler want to work. A good handler realizes that and understands they are responsible for not working the dog (even it want to) if the dog is not up to working.
Someone who doesn’t understand that should not have a Service Dog.
This is a story I found on the internet.
»But, do they ever refuse to execute a command?
Yes. And when they do, the smart handler pays attention because they have a damn good reason.
Some years ago, I went to the movies with Declan, my first SD. We got my tickets and snacks and headed to the escalator to go up to the right theatre. We trained for countless hours to be sure he knew how to do them safely, and with him by my side, so could I.
But not this time. When I gave him the command to move forward, he refused. He walked up to it, but stopped me before I could get on. I tried again; he still refused.
A bit irritated, I went and got directions to the nearest elevator. If we delayed any more, we'd miss the beginning of the movie. While we made our way upstairs, I resolved to do more training with escalators to solve the problem.
I found my seat and Declan snored beside me once he knew I was safely in my seat and not likely to get up. When the movie ended, we went back over to the escalators, because I thought we should at least try again.
They were roped off with yellow caution tape, still and silent. I asked an employee, who told me they'd broken about two hours ago. Apparently, there'd been a great deal of grinding and some sparks and smoke involved.
After he told me, I stood there gaping at him, and then looked from him to my dog a few times. Based on the length of the movie, the escalator broke only a few short minutes after Declan refused to let me on it. I have no idea how he knew but I don't believe it was coincidence. »