What does mandatory mean?
Mandatory describes something that must be done, supplied, attended, or included because a law, regulation, policy, or other formal rule requires it. The term is common in government, education, employment, safety, finance, and legal contexts: mandatory training, mandatory reporting, and a mandatory prison sentence are all established usages. It generally carries a stronger institutional or coercive connotation than simply “required,” especially when failure to comply may lead to a fine, penalty, disqualification, or other sanction. “Mandatory” can also describe a duty arising from someone’s position, as when attendance at a particular meeting is mandatory for committee members, or a condition that is effectively unavoidable in the circumstances. In everyday writing, it is often interchangeable with “required” or “compulsory,” but it is especially appropriate when the source of the obligation should be made explicit.
adjectiveRequired by law, regulation, or an authoritative set of rules; compulsory rather than optional. It may also describe a duty or condition that is unavoidable because of circumstances or institutional requirements.
- Required by a law, regulation, policy, or other authoritative rule.
- Binding on someone because of their role, position, or the nature of a situation.
"All employees must complete the mandatory safety course before beginning work."
"The proposal includes mandatory disclosure of all political donations."
"Attendance at the induction is mandatory for new members of the committee."
Mandatory means there is no opting out: a rule has closed the door and handed you a checklist.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mandatory come from?
“Mandatory” entered English from French, ultimately from Latin mandātōrius, a derivative of mandāre, meaning “to order” or “command.” The same Latin root underlies “mandate,” “command,” and “commend.” Its development reflects the basic sense of being directed or bound by an order.
Related word forms
How mandatory is actually used
The word is especially common in legal, regulatory, academic, and institutional contexts. It usually implies that noncompliance carries consequences, although it can also be used more generally for an unavoidable condition.
Easily confused with mandatory
Both indicate that something must be done, though “mandatory” more often emphasizes an externally imposed legal, regulatory, or institutional rule.