Regulatory law refers to

secondary legislation Primary legislation and secondary legislation (the latter also called delegated legislation or subordinate legislation) are two forms of law, created respectively by the legislative and executive branches of governments in representative democra ...

, including

regulation Regulation is the management of complex systems according to a set of rules and trends. In systems theory, these types of rules exist in various fields of biology and society, but the term has slightly different meanings according to context. Fo ...

s, promulgated by an executive branch agency under a delegation from a legislature. It contrasts with

statutory law Statutory law or statute law is written law passed by a body of legislature. This is opposed to oral or customary law; or regulatory law promulgated by the executive or common law of the judiciary. Statutes may originate with national, stat ...

promulgated by the legislative branch, and

common law In law, common law (also known as judicial precedent, judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions."The common law is not a brooding omnipres ...

case law Case law, also used interchangeably with common law, is law that is based on precedents, that is the judicial decisions from previous cases, rather than law based on constitutions, statutes, or regulations. Case law uses the detailed facts of a l ...

promulgated by the judicial branch. Regulatory law also refersA. I. Ogus
"Regulatory Law: Some Lessons from the Past"
Legal Studies 12, no. 1 (March 1992): 1–19 to the law that governs conduct of administrative agencies (both promulgation of regulations, and adjudication of applications or disputes), and judicial review of agency decisions, usually called

administrative law Administrative law is the division of law that governs the activities of executive branch agencies of government. Administrative law concerns executive branch rule making (executive branch rules are generally referred to as "regulations"), ad ...

. Administrative law is promulgated by the legislature (and refined by judicial common law) for ''governing'' agencies. The administrative agencies create procedures to regulate applications, licenses, appeals and decision making. In the United States, the Administrative Procedure Act is responsible for all federal agency policies.

References

Regulation Delegated legislation {{law-stub