The statement highlights a fundamental aspect of modern governance: the increasing reliance on delegated legislation (also known as subordinate legislation or administrative rule-making). Delegated legislation refers to the law-making power conferred by the legislature (Parliament or State Legislatures) upon the executive or administrative authorities to make rules, regulations, orders, and by-laws within the framework of a parent statute. This practice has become indispensable due to the complexities and demands of a welfare state.

Reasons for the Necessity of Delegated Legislation:

1. Time Constraint of Legislature: Modern legislatures are overburdened with work. They have limited time to deliberate on every minute detail of complex legislation. Delegating the power to make detailed rules allows them to focus on broad policy matters, while administrators fill in the operational specifics.
2. Technicality and Expertise: Many contemporary subjects, such as environmental protection, telecommunications, financial regulation, and public health, are highly technical and require specialized knowledge. Administrative bodies, staffed with experts, are better equipped to formulate detailed rules and regulations in these areas than generalist legislators.
3. Flexibility and Adaptability: Laws need to be dynamic and capable of quick adaptation to changing circumstances, technological advancements, or unforeseen situations. Amending a primary statute through the full legislative process is time-consuming. Delegated legislation allows for quicker adjustments and modifications to rules without having to go back to Parliament.
4. Emergency Situations: In times of crisis or emergency, rapid action is often required. Delegated legislation enables the executive to issue necessary orders and regulations swiftly to address urgent situations, such as public health emergencies or natural disasters.
5. Complexity of Modern Administration: The scope of government functions has expanded significantly in a welfare state. Implementing social welfare schemes, economic policies, and regulatory frameworks requires a vast body of detailed rules that cannot all be contained within a single parliamentary act.
6. Experimentation: Delegated legislation allows for experimentation with new policies and rules. If a rule proves ineffective or problematic, it can be easily amended or repealed by the administrative authority without the need for a full legislative process.

Concerns and Safeguards: While essential, delegated legislation raises concerns about potential abuse of power, lack of democratic accountability, and the blurring of the lines between legislative and executive functions. Therefore, various controls are in place:

• Parliamentary Control: Legislatures exercise control through scrutiny committees (e.g., Committee on Subordinate Legislation), requiring delegated legislation to be laid before them, and retaining the power to repeal or modify such rules.
• Judicial Control: Courts can review delegated legislation to ensure it is within the powers conferred by the parent act (doctrine of ultra vires) and does not violate fundamental rights or other constitutional provisions.
• Procedural Control: Statutes often mandate procedures like prior publication, consultation with affected parties, or public hearings before rules are finalized, ensuring transparency and public participation.

In conclusion, the need for administrative rule-making is an inevitable consequence of the modern state's expanded role and the increasing complexity of governance. Delegated legislation, despite its potential pitfalls, is an indispensable tool for efficient and effective administration, allowing for detailed, flexible, and expert-driven law-making within the broad policy framework set by the elected legislature. Its legitimacy, however, rests on robust oversight and control mechanisms.