OL is Office Lady, a common subject in Japanese porn. This, however, was not an OL. If she'd truly been an office lady, she would've started out in a blouse, skirt, and blazer, along with bra, panties, and pantyhose, and then had the clothing removed prior to the whipping.
She looks so beautiful with that YELLOW gag-ball in her mouth …
I generally love Japanese OL porn.