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 freedom 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 Article 159, using its two‑thirds majority in Parliament to alter the Constitution for political ends, most notoriously in 1988, when it amended Article 121(1) to strip the courts of their inherent judicial power (Loh, 2018).
Within this framework, the judiciary plays a particularly vital role. It is entrusted with interpreting the Constitution, resolving disputes, and protecting fundamental freedom 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 Article 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] 2 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 Article 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: The Constitutional Framework of Malaysia's Fusion of Powers and Executive Dominance
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 is not an accidental feature; it is a deliberate design of the parliamentary system, explicitly codified within the Federal Constitution. The legal basis for this is found in Article 43, which outlines the structure of the Cabinet. Article 43(1) states 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 and Cabinet ministers must be appointed from among members of either the Dewan Rakyat (House of Representatives) or Dewan Negara (Senate).
This constitutional requirement for ministers to be sitting members of Parliament reinforces the fusion of powers. Unlike in a presidential system where the executive is distinct, in Malaysia’s parliamentary system, key figures of the executive branch are simultaneously members of the legislative branch. This reflects Walter Bagehot’s 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” (Bagehot, 1867). This fusion is intended to ensure that those who exercise executive authority remain directly accountable to Parliament. Furthermore, Article 43(2)(a) provides that the Yang di-Pertuan Agong shall first appoint as Prime Minister 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.
While intended to ensure accountability, this requirement for majority support is also the primary source of the executive's significant power over the legislature. In practice, the Prime Minister is the leader of the political party or coalition that holds the most seats in the Dewan Rakyat. This political reality, combined with strict party discipline enforced by a whip system, means that the governing party’s legislators will almost always vote in favour of the government's legislative proposals (Faruqi, 2008). Consequently, Parliament, which should function as a check on executive power, often becomes a mechanism for legitimising the executive's agenda. This concentration of power in the hands of the executive has led commentators to describe the system as an 'elected dictatorship', where the executive is dominant for the duration of its term in office, provided it maintains its majority (Harding, 2012).
This executive dominance is most clearly demonstrated through the legislative process itself. The executive, by controlling the parliamentary timetable and agenda, can push through legislation that serves its interests, including laws that contain ouster clauses. An ouster clause is a provision in a statute that attempts to prevent or "oust" the jurisdiction of the courts, thereby shielding decisions made by the executive or administrative bodies from judicial review. For example, statutes dealing with national security, such as the Prevention of Crime Act 1959 (POCA) and the Security Offences (Special Measures) Act 2012 (SOSMA), contain provisions that seek to limit the courts' power to scrutinise executive actions like preventive detention. By using its parliamentary majority to enact such clauses, the executive effectively attempts to place itself above the law, directly challenging the judiciary's role as the guardian of legality and constitutional rights.
The most extreme manifestation of executive dominance, however, has been the use of parliamentary majority to amend the Constitution itself. Article 159 of the Federal Constitution allows for amendments with the support of a two-thirds majority in Parliament. While this high threshold was intended to protect the Constitution, a strong executive with a large majority can use this power to alter the fundamental balance of power. The most infamous example of this was the 1988 constitutional crisis. Following a series of judicial decisions that went against the government, the executive, led by then Prime Minister Mahathir Mohamad, used its two-thirds majority to amend Article 121(1) of the Constitution (Loh, 2018). Before the amendment, Article 121(1) vested the "judicial power of the Federation" in the High Courts. The amendment removed this phrase and declared that the courts would have only "such jurisdiction and powers as may be conferred by or under federal law."
This amendment had a profound and damaging effect. It was widely interpreted as an attempt to subordinate the judiciary to Parliament, suggesting that the courts’ powers were no longer inherent but were granted by the legislature, which was itself controlled by the executive (Faruqi, 2008). This event, coupled with the dismissal of the Lord President Tun Salleh Abas, marked the lowest point for judicial independence in Malaysia and starkly illustrated the vulnerability of the judiciary in the face of an overwhelmingly dominant executive. Thus, the constitutional design of fusion, when combined with the political reality of a strong party system, created an environment where the executive could assert its dominance not only over the legislature but also over the judiciary, fundamentally altering the constitutional landscape.
References
Bagehot, W. (1867) The English Constitution. Chapman and Hall.
Federal Constitution of Malaysia.
Faruqi, S. S. (2008) Document of Destiny: The Constitution of the Federation of Malaysia. Star Publications.
Harding, A. (2012) The Constitution of Malaysia: A Contextual Analysis. Hart Publishing.
Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak [2018] 1 MLJ 545.
Loh, P. (2018) ‘Commentary: The 1988 Judicial Crisis And Its Lingering Impact On The Rule Of Law In Malaysia’, Channel News Asia, 22 July.
Prevention of Crime Act 1959 (Act 297).
Security Offences (Special Measures) Act 2012 (Act 747).
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.
