The man is having an affair with his stenographer or is starting one. Very little shorthand dictation shown. Just a bit at the first. Later in that shot, I can't tell if she's taking shorthand or writing out things by hand as I couldn't see the typewriter, but maybe it's there.
I think he gives the female stenographer a car (I went a head a bit),then he gives the car to his wife. The wife thinks he might be having an affair and tries to find him. Cop and car chase.