The University of Stuttgart's Bachelor's and Master's study programs are organized as full-time study programs. This means that the course structure and related workload are designed so that being a student is your full-time job. As a full-time student, you can of course work part-time, but not more than 20 hours per week. The Studierendenwerk Stuttgart has compiled a list of insurance and tax regulations (and what you need to know about BAföG) for those who work part-time. You should also plan your workload so that your total study period is no more than 10 semesters for a Bachelor's program, and 8 for a Master's.
In terms of timing your study program, the exam regulations for individual study programs do offer a certain flexibility. For students with special circumstances, for example those raising children or caring for relatives, there are also options for extending examination deadlines. This also applies to students with disabilities or chronic illness. Please read the exam regulations for your specific study program.
At the University of Stuttgart, the only part-time study programs with specially adjusted standard study period, and with an adapted curriculum are the part-time continuing education Master's study programs. These are aimed at people who are already working and with work experience and are organized to allow students to study and work at the same time. These continuing education study programs are subject to student fees and require that the person wishing to study has already completed a degree and that they have at least one year of work experience.