The permission to access work is easily available in Poland though it again depends hugely on the citizenship of the student. Here the increase in wage is high and systematic. There is an option for the students to opt for work while doing paid studies.
For EU/EEA citizens
If you are a Citizen of the European Union and EEA countries, and Switzerland, you are eligible to work in Poland without a work permit. If you're a citizen of certain countries like Russia or Ukraine, your access to work in Poland without a work permit for six months to 1-year maximum is granted. In these cases, declaration or authorization of your employment is a must by the authority or employer.
For non-EU/EEA citizens
For Non-EU citizens, working in Poland and a post-study visa in Poland is easy and hassle-free. The students who have enrolled themselves as regular students in Poland are allowed to work in Poland without any specific work permit for full time during the breaks in Academic Institutes. For the rest of the year, they are allowed to work part-time, that is 20 hours a week. But always remember that the EU students will always get the maximum and highest priority for filling up the vacancy. Once the studies are over, a Post-study visa in Poland is necessary. Post studies always the work permit that is the stay permit is needed. Student visa won’t suffice for access to work post studies. The formalities are essential which must be done and organized by the employer as this is the mandatory proof. But after graduation, with the right extension in your Stay Back permit, you do not require any specific work permit for Poland. If you are a graduate student from one of the Universities in Poland, a work permit, even after the studies, is not required.