non‑mandatory

the company offers non-mandatory training sessions on workplace safety.

students can enroll in non-mandatory courses to expand their knowledge.

the non-mandatory vaccination is available at all health centers.

non-mandatory participation in the charity event is encouraged.

teachers assign non-mandatory reading materials for extra credit.

the gym provides non-mandatory fitness classes for members.

employees can make non-mandatory contributions to the retirement plan.

the conference includes several non-mandatory workshops.

non-mandatory exams are offered to assess student progress.

the university offers non-mandatory study abroad programs.

non-mandatory community service hours are accepted but not required.

management has introduced non-mandatory wellness programs for staff.