I had one. only one, and only because I was lenient. I had agreed to no visible marks, since she wanted to keep her job for the time being. she spent a week not doing a single thing i told her to do. so i patiently waited, and during a flogging session, I took great pains to only strike areas of the body that would be visible in her work uniform (skirt, and short sleeve polo) when she complained about it and brought up my promise, which i knew she would, I brought up her agreement to follow orders, and informed her that I would keep my word when she showed me she could.
She ended up quitting as opposed to having to explain lash marks on her lower legs and forearms to her co-workers, and never disobeyed again.