@johnpoop2529 I think that's the most obvious. Since he is the one who sees the their occupation, I also think it's partially him who sees the occupations just as he also refers to them. So he would also only refer the woman he marries as his wife and not all the other married people with different jobs.
Plus the wife being first and the secretary being the 2nd job sounds how this will work. If the autor doesn't just come up with a simple excuse to turn it someway around for a pLoTtWiSt.