LEGAL PRINCIPLE: INTERPRETATION OF STATUTES – Word ‘Shall’ – Mandatory or Directory
PRINCIPLE STATEMENT
The word 'shall' as used in statutory provisions is mandatory and does not permit of any discretion, variation or circumvention of the clear procedure to be followed.
RATIO DECIDENDI (SOURCE)
"The word 'shall' as used in sections 9(1) and 13 of Decree No. 10 of 1985, I conceive, is mandatory and does not, in my view, permit of any discretion, variation or circumvention of the clear procedure to be followed."
EXPLANATION / SCOPE
“Shall” in statutes creates mandatory obligations, not discretionary powers. When statutes use “shall” they: impose duties (not grant options), require compliance (not suggest it), and permit no discretion, variation, or circumvention. This interpretation serves: certainty (parties know what’s required), accountability (duty-holders must comply), and limiting administrative discretion (protecting against arbitrary action). “Mandatory” means: compliance is compulsory, non-compliance renders actions invalid, and no flexibility exists to deviate. However, context matters—sometimes “shall” may be directory if: the statute’s scheme shows flexibility intended, consequences of non-compliance aren’t specified as voiding actions, or the provision concerns administrative convenience rather than rights protection. Courts presume “shall” is mandatory but examine: statutory purpose, consequences intended, and whether treating it as directory would defeat the statute’s object. The contrast: “shall” = mandatory obligation; “may” = discretionary power. This principle guides interpretation of procedural and substantive statutory requirements, ensuring mandatory obligations receive appropriate weight.