"Nine to Five" sounds suspiciously like the name of a proposed series, and everything about this show would make you believe that it was a pilot squeezed out of 77 Sunset Strip.
Stu Bailey is in NY delivering an investigative report to an old friend. The old friend, Richard Long, was of course part of Bailey and Spencer for a season a couple of years before this episode. His character is dealing with a shady partner that he wants to buy out, a wife who can't decide between moving out and moving in, and a secretary with a big crush on him, and a bit of larceny in delivering a message that might help his marriage. Stu delivers sage advice to help on the marriage front.
With the title, the way this story wrapped up neatly, and the way the camera pans up the outside of a huge office building at the end, my guess is that this was to be an anthology series, where each episode would have centered on different characters in the building. I can't see the characters and situations in this story as a continuing series, which led me to that conclusion.
So while this was an odd 77 Sunset Strip story, I like anything with Richard Long and Diane McBain -- two charming actors who always delivered pleasing performances.