**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.⁴
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 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 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] 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] and *Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak* [2018], 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 the 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 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. The legal basis for this overlap is found in Article 43, which outlines the structure of the Cabinet. Article 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 Article 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 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.”¹ This metaphor illustrates that this fusion ensures that those who exercise executive authority remain directly accountable to Parliament. This is further demonstrated in Article 43(2)(a) 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 political reality, combined with the constitutional structure, allows the executive to exert significant control over the legislature. This control is primarily exercised through the mechanism of party discipline, a core feature of the Westminster system. Government MPs are expected to vote in favour of government bills and motions, a practice enforced by party whips. This ensures that the executive’s legislative agenda is rarely defeated in Parliament, effectively turning the legislature into a body that legitimises executive decisions rather than scrutinising them effectively. As a result, the legislature’s role in checking the executive is diminished, leading to what Professor Shad Saleem Faruqi terms a system of ‘executive paramountcy’ rather than parliamentary supremacy.²
Furthermore, the executive’s dominance is institutionalised through its control over parliamentary business. The Standing Orders of the Dewan Rakyat give procedural priority to government business.³ The executive branch determines the parliamentary timetable, deciding which bills are debated and when. This power allows the government to fast-track its own legislation while limiting the time available for opposition-led debates or Private Members’ Bills. Consequently, the legislative agenda is almost entirely dictated by the Cabinet, leaving little room for Parliament to initiate laws or conduct thorough oversight. This procedural control means that Parliament often acts as a ‘rubber stamp’ for the executive, particularly when the ruling coalition holds a substantial majority.
Executive control is further cemented through its exclusive power over national finances. The Federal Constitution stipulates a clear process for financial legislation that heavily favours the executive. Article 99 requires the government to present an annual budget, and Article 100 states that this budget, which contains the government’s entire financial and policy plan for the year, must be passed as a Supply Bill. Crucially, members of Parliament cannot propose any new taxes or increase expenditure without the government’s recommendation.⁴ This ‘power of the purse’ is one of the executive’s most formidable tools, as control over public spending is equivalent to control over public policy. Parliament’s role is limited to debating and approving the budget, but it cannot realistically reject it without triggering a political crisis or a loss of confidence in the government.
This entrenched dominance enables the executive, via the legislature it controls, to pass laws that challenge the very foundations of the rule of law. A significant example is the enactment of statutes containing ouster clauses. These are legislative provisions designed to exclude or limit judicial review of executive actions or decisions. For instance, the Prevention of Crime Act 1959 (POCA) and the Security Offences (Special Measures) Act 2012 (SOSMA) contain clauses that attempt to prevent the courts from examining the legality of detention orders issued by the executive. By passing such laws, the executive-dominated legislature seeks to shield governmental power from judicial scrutiny, thereby undermining the judiciary’s constitutional role as a check and balance. This legislative practice directly confronts the principle of constitutional supremacy under Article 4(1), creating a fundamental tension that the judiciary is often left to resolve. This sets the stage for a constitutional struggle, where the courts must decide whether to accept such legislative restrictions or to assert their inherent judicial power as guardians of the Constitution.
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¹ W Bagehot, *The English Constitution* (first published 1867, Chapman and Hall). I am unable to provide a pinpoint to the exact edition.
² SS Faruqi, *Document of Destiny: The Constitution of the Federation of Malaysia* (Star Publications 2008).
³ Standing Orders of the Dewan Rakyat, Order 15(1). I am unable to provide a direct URL to the official source.
⁴ Federal Constitution, art 67(1).
*(Please note: the footnote ⁴ in the original user-provided introduction was not specified, so it has been omitted here. I have started the new footnotes from 1).*
References
**Primary Sources**
Federal Constitution
Prevention of Crime Act 1959
Security Offences (Special Measures) Act 2012
*Indira Gandhi a/p Mutho v Pengarah Jabatan Agama Islam Perak* [2018] 1 MLJ 545
*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
**Secondary Sources**
Bagehot W, *The English Constitution* (Chapman and Hall 1867)
Faruqi SS, *Document of Destiny: The Constitution of the Federation of Malaysia* (Star Publications 2008)
Harding A, *The Constitution of Malaysia: A Contextual Analysis* (Hart Publishing 2012)
