DjZolt:
I'm looking for the stories where females get a spanking while being undercover (journalist, cop, boss, etc). Could you help me to find some of such stories, please?
Well, the Library's writing Challenge (#17) on "Mistaken Identity" would likely have numerous stories featuring a situation like that.
(My own entry, "The View from the Bottom," includes such a scenario, however its science-fiction plot line is rather complex.)
Perhaps someone will write you a fan-fiction account of James Bond spanking Tatiana Romanova.
Anyway, good luck...

--C.K.