Interesting one @Hilly0!
Technically, Airbnb don't permit third-party bookings so potentially you might be on your own if you had any problem down the line.
That aside, I've had a few of these over the last couple of years. An employer decides to give Airbnb a go as it looks cost effective or they have used it themselves. Half the time I've ended up with a bemused guest who doesn't know anything about Airbnb but loves the concept once you explain it. Half the time a bemused guest who doesn't quite know what to make of it and would rather be in traditional accommodation.
Anyway, can you ask the employer to get the actual guest to register? You could send them your sign up link to sweeten the deal! That would keep you covered as well.
Good luck!