Thank you for your question.
The so-called "Chancen-Aufenthalt" (residence permit according to section 104c of the German Residence Act) should come with a work permit. However, I recommend to double check your residence permit card or the "Zusatzblatt" (the usuall green supplementary sheet) that it actually includes the work permit. If you can not find the respective information, you should talk to the immigration office about it.
I hope this helps and feel free to get back to us with any further questions.
All the best,