His Naughty Secretary by Emily Tilton

When her handsome new boss orders her to strip for an intimate, deeply humiliating inspection in his office, twenty-year-old Ingrid Vogel’s disobedience quickly earns her a thorough paddling. But the moment she is bared for her punishment, her helpless arousal can no longer be hidden.

By the time she is sent home with instructions to return to work tomorrow without her panties, Ingrid has not only been roughly claimed over her employer’s desk and then put on her knees and made to thank him properly for it, she’s also come harder than she’d ever thought possible.
But it isn’t until the next day that she learns just how shamefully she will be used and enjoyed. That’s when her boss will share her with the other executives… and when he’ll take her the one way he hasn’t yet, the way she’s too embarrassed to even imagine being taken by a man.