I watched it long time ago.It was about rich man who fall in with poor girl.I don't really remember whole plot. He gets amnesia and he and his secretary are walking in his company where she is also working. She is sleeping on chair with her head on table . When he sees her he doesn't remember but he cover her with his jacket or blanket . I don't know i it was all like that but if someone know please help.

I think the drama you're talking about is called Rich Man (It's available as Japanese and Korean Versions but the scene you're talking about is in Korean version) This may be the drama :)

 CheshireUnicorn:

I think the drama you're talking about is called Rich Man (It's available as Japanese and Korean Versions but the scene you're talking about is in Korean version) This may be the drama :)

Since you said you watched it long ago, I'm maybe wrong. But the scene you're talking about exactly matches a scene from that drama. A rich man also falls for a poor girl in that drama :)

Thank you for your answer but it is not the drama i am looking for. I don't remember i it was Korean,Japanese or maybe even Chinese . I remember just that scene.

Can you tell more details? Those are way too vague and lead me to think in tons of dramas with this kinda amnesia-rich-male-lead plot thing.

I know :D I really don't remember much. I know he has secretary older than him almost like father . I have list of dramas with similar story and are not the one I am looking for.

Its not:

Fated to love you,Boys Beore Flowers,Masters sun,Secret Garden.

See if it's any of these:

 Alexis995:

Thank you for your answer but it is not the drama i am looking for. I don't remember i it was Korean,Japanese or maybe even Chinese . I remember just that scene.

Oh, okay :) 

Is it Waking Love Up /Prince Turns into a frog?