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 (2012) emphasized that judicial review in Malaysia is central to maintaining the rule of law, while Shad Saleem Faruqi (2008) 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 Malaysian constitution, heavily influenced by the Westminster model, does not enforce a strict separation of powers but rather a fusion between the executive and legislative branches. This overlap between the Executive and Legislature is not an accidental feature, instead it is a unique feature of the Parliamentary Democracy System that is explicitly codified within the Federal Constitution, art 43. Federal Constitution, art 43(1) provides that the Yang di-Pertuan Agong shall appoint a Jemaah Menteri (Cabinet of Ministers) to advise him in the exercise of his functions. According to Federal Constitution art 43(2), the Prime Minister and Cabinet ministers are appointed from among members of either House of Parliament or Senate.
The constitutional requirements for ministers to be sitting members of the Parliament reinforces the fusion of powers. Unlike the presidential system, where the executive is distinct from the legislature, in Malaysia’s Parliamentary system, key figures of the executive branch are simultaneously members of the legislative branch. This reflects Walter Bagehot’s (1867) description of the Westminster 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.” This metaphor illustrates that this fusion ensures that those who exercise executive authority remain directly accountable to Parliament. This is further demonstrated in Federal Constitution, art 43(2)(a) which provides that the Yang di-Pertuan Agong shall first appoint as Perdana Menteri (Prime Minister) to preside over the Cabinet a member of the House of Representatives who in his judgment is likely to command the confidence of the majority of the members of that House. Thus, Malaysia operates under a system of executive and legislative fusion rather than a strict institutional separation between them.
However, the same constitutional overlap can cause executive dominance when the government commands a strong Parliamentary majority. In practice, the Prime Minister is usually the leader of the political party or coalition that commands a majority of seats in the Dewan Rakyat. This structural fusion becomes practically significant when the ruling party or coalition secures a commanding majority in the Dewan Rakyat. Historically, the Barisan Nasional coalition maintained uninterrupted two-thirds majorities from independence until 2008, with brief interruptions. According to the Federal Constitution, art 159(3) a Bill to amend most constitutional provisions requires support from at least two-thirds of the total number of members of that House. With such a majority, the executive branch effectively controls the ordinary legislation and also the power to reshape the Constitution itself.
The dominance of the executive over the legislatures operates through multiple interconnected mechanisms. First, the Malaysian parliamentary system is practiced through the mechanism of party discipline. Government Members of Parliament are expected to vote in favour of government bills and motions, a practice enforced by party whips. This ensures parliamentary support for much of its legislative agenda, limiting Parliament’s capacity to scrutinise and challenge executive decisions effectively. Consequently, the legislature’s role in checking the executive is diminished, leading to what Shad Saleem Faruqi (2008) terms a system of ‘executive paramountcy’ rather than parliamentary supremacy.
Before 1988, the judiciary’s authority was explicitly grounded in the original wording of the Federal Constitution, art 121(1) which vested the “judicial power of Federation” in the two High Courts and subordinate courts. At this stage, Malaysian judges generally took a cautious approach towards Parliament and the executive. This reflected the influence of British parliamentary traditions, where courts avoided questioning the validity of legislation as long as proper procedures were followed. In practice, the judiciary prioritised legislative supremacy and rarely challenged government actions.
This judicial deference was clearly illustrated in the Federal Court case of Loh Kooi Choon v Government of Malaysia [1977] 2 MLJ 187. The case concerned a challenge to a constitutional amendment to art 5(4) that had retrospective effect which removed the entitlement of persons detained under restrictive-residence legislation to be brought before a magistrate. The court was invited to adopt the Indian Basic Structure Doctrine, which holds that certain fundamental features of the Constitution cannot be amended by Parliament. The court refused to do so. The ratio decidendi for the decision was that Parliament could amend Article 5(4) to remove or restrict the right to be brought before a magistrate in cases involving restricted residence, provided that the procedural requirements of Article 159 were satisfied. Once validly enacted, the amendment became part of the Constitution itself and could not be treated as inconsistent with the Constitution.
Federal Court Judge Raja Azlan Shah (as he then was) delivered the leading judgement, explicitly rejecting the Indian doctrine. He reasoned that while the Constitution was supreme, its provisions could be amended by Parliament as long as the formal procedures in Article 159 were followed. In his view, there were no substantive limits on Parliament’s power to amend the Constitution; so long as the correct legislative process was used, any amendment became part of the supreme law. This decision established the pre-1988 position: the fusion of powers enabled executive-led constitutional change, and the judiciary showed little appetite to impose substantive checks, preferring a posture of procedural oversight.
Part 2: The 1988 Crisis and Executive Ascendancy
The deferential stance of the judiciary was shattered by the 1988 constitutional crisis, which represented the high-water mark of executive dominance over the judicial branch. Following a series of judicial decisions that were unfavourable to the government, the executive, led by then-Prime Minister Mahathir Mohamad, moved to curtail the power of the courts. The conflict culminated in a direct legislative assault on the judiciary's constitutional foundation.
Through the Constitution (Amendment) Act 1988, Parliament amended Article 121(1) of the Federal Constitution. The original clause, which vested the "judicial power of the Federation" in the High Courts, was removed. In its place, new wording stipulated that the High Courts "shall have such jurisdiction and powers as may be conferred by or under federal law." The implication of this amendment was profound. It suggested that judicial power was no longer an inherent constitutional attribute of the judiciary, but rather a power granted by, and therefore subordinate to, Parliament. This fundamentally altered the balance of power, placing the judiciary in a constitutionally subservient position relative to the legislature, which was itself dominated by the executive. This period was further marred by the controversial removal of the Lord President, Tun Salleh Abas, and the suspension of several other senior judges, actions widely seen as an attack on judicial independence itself (Harding, 2012). The 1988 crisis thus exposed the fragility of the judiciary when faced with a determined executive wielding a two-thirds parliamentary majority.
Part 3: The Judicial Revival and the Basic Structure Doctrine
For nearly two decades after the 1988 crisis, the judiciary largely adopted a cautious approach, seemingly accepting its diminished constitutional role. However, a gradual but determined resurgence began in the 21st century, centred on the revival of the Basic Structure Doctrine that was rejected in Loh Kooi Choon.
The first significant step was the Federal Court decision in Sivarasa Rasiah v Badan Peguam Malaysia & Anor [2010] 2 MLJ 333. The case concerned a challenge to a law restricting office-bearers in political parties from sitting on the Bar Council. While the court did not strike down the law, it interpreted the restrictions narrowly. Crucially, the court held that the fundamental rights guaranteed in Part II of the Constitution form part of its basic structure. It stated that any legislative infringement of these rights must be proportionate and reasonable. This was a notable shift, suggesting that even if Parliament could legislate on fundamental rights, the judiciary retained the power to review the substance of that legislation against a constitutional standard.
The judicial reclamation of power gained significant momentum with Semenyih Jaya Sdn Bhd v Pentadbir Tanah Daerah Hulu Langat [2017] 3 MLJ 561. In a landmark ruling, the Federal Court revisited the 1988 amendment to Article 121(1). The court held that the amendment could not take away the core "judicial power of the Federation," as this power was inherent to the judiciary and a fundamental feature of the separation of powers under the Constitution. It reasoned that judicial power is an essential element of the basic structure, and therefore, Parliament does not have the authority to remove it. This decision effectively read down the 1988 amendment, reasserting that judicial authority stems directly from the Constitution, not from ordinary federal law.
This revitalised judicial assertiveness was cemented in Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak [2018] 1 MLJ 545. The Federal Court declared that judicial review is a fundamental constitutional feature that cannot be abrogated by statute. The court held that ouster clauses, which are legislative provisions attempting to prevent courts from reviewing executive actions, are unconstitutional if they seek to deny the High Courts their supervisory jurisdiction. The court powerfully reaffirmed that the judiciary is the ultimate interpreter of the Constitution and the designated guardian against any legislative or executive overreach. The decisions in Semenyih Jaya and Indira Gandhi collectively represent a profound judicial counter-narrative to the executive dominance institutionalised in 1988.
Conclusion
The journey of the Malaysian judiciary demonstrates a clear and contentious struggle over the meaning and application of the separation of powers. The Westminster model, with its inherent fusion of the executive and legislative branches, creates a constitutional structure where executive dominance is a constant possibility, particularly when backed by a strong parliamentary majority. The pre-1988 era, typified by the judicial deference in Loh Kooi Choon, saw the courts reluctant to challenge this arrangement. The 1988 crisis and the amendment to Article 121(1) marked the lowest point for judicial independence, exposing its vulnerability to political power.
However, this essay has shown that this was not the end of the story. The judiciary has demonstrated significant resilience. Through the progressive revival and application of the Basic Structure Doctrine in landmark cases like Sivarasa Rasiah, Semenyih Jaya, and Indira Gandhi, the courts have reasserted their constitutional role. They have reclaimed judicial power as an inherent feature of the constitutional order and established judicial review as a non-negotiable check on state power. While the tension between executive authority and judicial independence remains a defining feature of Malaysian constitutionalism, the judiciary's recent trajectory signals a robust defence of constitutional supremacy and the rule of law.
References
Bagehot, W. (1867) The English Constitution. London: Chapman and Hall.
Federal Constitution of Malaysia.
Harding, A. (2012) The Constitution of Malaysia: A Contextual Analysis. Oxford: Hart Publishing.
Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak [2018] 1 MLJ 545.
Loh Kooi Choon v Government of Malaysia [1977] 2 MLJ 187.
Montesquieu, C. (1748) The Spirit of Laws.
Semenyih Jaya Sdn Bhd v Pentadbir Tanah Daerah Hulu Langat [2017] 3 MLJ 561.
Shad Saleem Faruqi. (2008) Document of Destiny: The Constitution of the Federation of Malaysia. Petaling Jaya: Star Publications.
Sivarasa Rasiah v Badan Peguam Malaysia & Anor [2010] 2 MLJ 333.
