The answer is of course that it's a business trip and riding on a coworker's motorcycle is just not appropriate. A trip on the back of a bike is far too familiar and involves close touching that is just not appropriate.
The way I see it is not that you don't trust your wife or the other guy, but there is no way that you would condone putting either into an inappropriate situation where others might question what they are doing. I wouldn't ban my wife, but Id talk to her about the appearance it creates that her coworkers and boss will see and they will draw their own conclusions.
She has to work with the guy and her other co workers and that's not something she needs to sour her work relationships.
If it were a "chaperoned" group outing, and they had all the safety gear and everyone can see that there's nothing out of place going on, it might be OK but there is a risk factor to consider and I would not approve that for my employees.
That's just my opinion.
The way I see it is not that you don't trust your wife or the other guy, but there is no way that you would condone putting either into an inappropriate situation where others might question what they are doing. I wouldn't ban my wife, but Id talk to her about the appearance it creates that her coworkers and boss will see and they will draw their own conclusions.
She has to work with the guy and her other co workers and that's not something she needs to sour her work relationships.
If it were a "chaperoned" group outing, and they had all the safety gear and everyone can see that there's nothing out of place going on, it might be OK but there is a risk factor to consider and I would not approve that for my employees.
That's just my opinion.