Law / Need advice regarding work permit in Poland (coming on Denmark visa) [10]

Greetings every one. I'm an Au pair here in denmark. i have resign from my employer and will be working here until december 19. i have a cook job offer from poland and they already started applying my work permit. my problem is my employer wants me to show them my work permit or visa to poland before december 19 before they let me go to poland otherwise they will send me back home to the philippines. Can i just go to poland using my denmark visa and stay there while waiting for my work permit/visa. please.. please.. please.. give me some advice, i don't want to go back to the philippines. thank you in advance for your response. warm regards to all.