employed people do not often have that luxury. This is particularly true if you are the boss and it is your own business.
If she is that immature, he is better off with an adult.
What makes you think he's (a)employed or (b) owns his own business?
I always had my wife or secretary answer the phone.
I was working out in the field and they knew most of the
information needed to answer questions that were called in.
When we are driving my wife answers the phone so I don't get distracted and run into someone.
In most situations my wife can speak for me.