Introduction
The doctrine of separation of powers is a fundamental tenet of constitutional governance, designed to prevent the concentration of authority by dividing government functions among three distinct branches: the executive, legislature, and the judiciary. Montesquieu articulated this principle in The Spirit of Laws (1748) where he argued that liberty cannot exist when judicial power remains joined with legislative and executive authority. In Malaysia, this principle is adapted through the Westminster parliamentary system, which creates a modified separation rather than a strict division. Because Cabinet ministers must be sitting members of Parliament, executive dominance over the legislature is entrenched, making the judiciary the only branch capable of checking constitutional excess (Federal Constitution, Article 4(1)).
This dominance is further entrenched through ouster clauses in statutes such as the Prevention of Crime Act 1959 (POCA) and Security Offences (Special Measures) Act 2012 (SOSMA), which attempts to shield executive actions from judicial review, raising serious constitutional concerns. Moreover, the executive has historically abused its amendment powers under art 159, using its two-thirds majority in Parliament to alter the Constitution for political ends, most notoriously in 1988, when it amended art 121(1) to strip the courts of their inherent judicial power.
Within this framework, the judiciary plays a particularly vital role. It is entrusted with interpreting the Constitution, resolving disputes, and protecting fundamental liberties against encroachment by the executive or legislature. Courts function as guardians of constitutional supremacy, ensuring that laws and governmental actions remain consistent with the nation’s highest legal document. Harding emphasized that judicial review in Malaysia is central to maintaining the rule of law, while Shad Saleem Faruqi highlighted that judicial independence is indispensable for democratic accountability. Public confidence in the legal system depends on the judiciary’s ability to act not merely as a neutral arbiter of disputes but as a central institution that upholds constitutional democracy.
However, the development of the independence of the judiciary has not been entirely consistent, and this inconsistency itself remains a contentious issue in Malaysian constitutional law. The 1988 amendment to art 121(1) removed the reference to the “judicial power of the Federation” subordinating the judiciary to Parliament and exposing its vulnerability to executive interference. This crisis was compounded by the removal of Lord President Tun Salleh Abas and the suspension of senior judges, events that symbolized the erosion of judicial independence.
Nonetheless, the judiciary began reclaiming its role through the revival of the Basic Structure Doctrine. In *Sivarasa Rasiah v Badan Peguam Malaysia & Anor* [2010] MLJ 333, the Federal Court recognized that fundamental constitutional principles cannot be undermined by legislative action. This revival was further strengthened in later cases such as *Semenyih Jaya Sdn Bhd v Pentadbir Tanah Daerah Hulu Langat* [2017] 3 MLJ 561 and *Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak* [2018] 1 MLJ 545, where the courts reaffirmed judicial independence and constitutional supremacy. The evolution of this doctrine demonstrates the judiciary’s resilience, insisting on the core values of separation of powers and the rule of law despite past setbacks. Yet, the extent to which the Basic Structure Doctrine can shield the judiciary from executive dominance remains a live debate, reflecting the ongoing tension between constitutional ideas and political realities in Malaysia.
This essay argues that Malaysia’s separation of powers is marked by a persistent debate between executive dominance and judicial independence. While the 1988 constitutional crisis and the amendment to art 121(1) exposed the judiciary’s fragility under political pressure, the revival of the Basic Structure Doctrine in cases such as *Sivarasa Rasiah* (2010), *Semenyih Jaya* (2017), and *Indira Gandhi* (2018) demonstrates its resilience in reclaiming constitutional supremacy. The judiciary’s trajectory highlights the contentious struggle between ouster clauses, constitutional amendments, and the courts’ role as guardians of the rule of law.
Part 1: Classical Era of Defence
The constitutional framework of Malaysia, drawing heavily from the Westminster model, does not implement a strict separation of powers. Instead, it deliberately establishes a fusion between the executive and legislative branches. This is not an incidental feature but a core principle of its parliamentary democracy, explicitly codified within the Federal Constitution. Article 43(1) of the Constitution provides that the Yang di-Pertuan Agong shall appoint a *Jemaah Menteri* (Cabinet of Ministers) to advise him. Crucially, Article 43(2) mandates that the Prime Minister must be a member of the Dewan Rakyat (House of Representatives) who, in the Agong’s judgment, is likely to command the confidence of the majority of that House, and that all other ministers must be appointed from among the members of either House of Parliament.
This constitutional requirement creates an overlap of personnel and function, embodying Walter Bagehot’s classic description of the Cabinet as “a combining committee—a hyphen which joins, a buckle which fastens, the legislative part of the state to the executive part of the state” (Bagehot, 1867). The intention behind this design is to ensure that those who hold executive power remain directly answerable to the legislature, thereby upholding the principle of responsible government.
However, this same fusion of powers becomes a source of executive dominance when the government commands a strong parliamentary majority. For much of its history, particularly before 2008, the ruling Barisan Nasional coalition held a consistent two-thirds majority in the Dewan Rakyat. This supermajority was constitutionally significant, as Article 159(3) of the Federal Constitution stipulates that a Bill to amend most constitutional provisions requires the support of at least two-thirds of the total members of each House. Consequently, an executive backed by such a majority could not only control the legislative agenda but also possessed the power to reshape the Constitution itself. This power operates through strong party discipline, where government Members of Parliament are compelled by party whips to vote along government lines, significantly weakening Parliament’s ability to act as a check on the executive. This has led scholars like Shad Saleem Faruqi to describe the system as one of ‘executive paramountcy’ rather than parliamentary supremacy (Faruqi, 2008).
In this pre-1988 period, the judiciary’s power was understood to be derived from the original wording of Article 121(1), which vested the “judicial power of the Federation” in the High Courts and subordinate courts. Influenced by the British legal tradition of parliamentary sovereignty, the judiciary generally adopted a deferential stance towards the legislative and executive branches. Courts were reluctant to question the substantive validity of parliamentary enactments, focusing instead on whether the correct legislative procedures had been followed.
This judicial posture was clearly demonstrated in the landmark Federal Court decision of *Loh Kooi Choon v Government of Malaysia* [1977] 2 MLJ 187. The case involved a constitutional challenge to an amendment to Article 5(4) which was given retrospective effect, removing the right of a person detained under restrictive residence laws to be produced before a magistrate. The appellant argued that the amendment was unconstitutional as it violated a basic feature of the Constitution, inviting the court to adopt the Basic Structure Doctrine from the Indian case of *Kesavananda Bharati v State of Kerala* AIR 1973 SC 1461.
The Federal Court unequivocally rejected this invitation. In the leading judgment, Raja Azlan Shah J (as he then was) held that Parliament had the power to amend the Constitution in any manner it saw fit, provided it adhered to the procedural requirements laid down in Article 159. The court’s reasoning was that once an amendment was passed according to the correct procedure, it became an integral part of the Constitution and could not be challenged on the ground that it was inconsistent with the Constitution’s fundamental principles. The court saw no distinction between the Constitution and ordinary law in this regard, and thus refused to impose substantive limits on Parliament’s constituent power. *Loh Kooi Choon* therefore exemplifies the judiciary’s position during this era: it saw its role as upholding the supremacy of a Parliament effectively controlled by the executive, rather than defending an abstract constitutional structure against legislative encroachment. This created a constitutional environment where executive power was pre-eminent, with the judiciary yet to assert itself as a robust counter-balance.
References
Bagehot, W. (1867) *The English Constitution*. Chapman and Hall.
Faruqi, S. S. (2008) *Document of Destiny: The Constitution of the Federation of Malaysia*. Star Publications.
*Federal Constitution of Malaysia*.
*Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak* [2018] 1 MLJ 545.
*Kesavananda Bharati v State of Kerala* AIR 1973 SC 1461.
*Loh Kooi Choon v Government of Malaysia* [1977] 2 MLJ 187.
*Semenyih Jaya Sdn Bhd v Pentadbir Tanah Daerah Hulu Langat* [2017] 3 MLJ 561.
*Sivarasa Rasiah v Badan Peguam Malaysia & Anor* [2010] 2 MLJ 333.
