Comprehensive Guide to Indonesian Law
A practical, utility-driven breakdown of the Indonesian legal system: Civil Code (KUHPerdata), contract validity doctrine, corporate legislation, labor protections, and commercial dispute resolution.
The Indonesian Legal System: Civil Law Foundation
Indonesia's legal system is fundamentally rooted in the Civil Law (Continental European) tradition, inherited through Dutch colonial rule (based on the Roman-Dutch system), combined with indigenous Adat (customary) law and Islamic law (Sharia) in designated personal status and regional administrative matters.
Unlike Anglo-American Common Law jurisdictions that adhere strictly to judicial precedent (stare decisis), Indonesian courts operate under codified statutory law. While Supreme Court jurisprudence (Yurisprudensi Tetap) provides influential interpretive authority, written legislative codes form the binding primary source of statutory obligations.
- The 1945 Constitution (Undang-Undang Dasar 1945 / UUD 1945)
- Decrees of the People's Consultative Assembly (Ketetapan MPR)
- Statutes / Acts (Undang-Undang / UU) and Government Regulations in Lieu of Law (Perppu)
- Government Regulations (Peraturan Pemerintah / PP)
- Presidential Regulations (Peraturan Presiden / Perpres)
- Provincial Regulations (Peraturan Daerah Provinsi)
- Regency / Municipal Regulations (Peraturan Daerah Kabupaten/Kota)
Contract Validity: The 4 Pillars of Article 1320 KUHPerdata
For any contract or agreement to be legally valid and enforceable before Indonesian courts, it must strictly satisfy the four cumulative conditions set forth in Article 1320 of the Indonesian Civil Code (Kitab Undang-Undang Hukum Perdata / KUHPerdata):
Both parties must freely and voluntarily consent to bind themselves without coercion (paksaan), mistake (kekhilafan), or fraudulent misrepresentation (penipuan) under Article 1321 KUHPerdata.
The parties must be of legal age (at least 21 years old or previously married under Article 330 KUHPerdata) and of sound mind, not placed under legal guardianship (curatele). Corporate entities must be represented by authorized directors according to their Articles of Association.
The object or subject matter of the contract must be sufficiently determined or determinable (Article 1332-1333 KUHPerdata), commercial in nature, and physically or legally feasible.
The performance and objective of the contract must not violate public order (ketertiban umum), statutory morality (kesusilaan), or mandatory statutory prohibitions (Article 1335 & 1337 KUHPerdata).
- Failure of conditions 1 or 2 (subjective requirements) makes the contract voidable (dapat dibatalkan), requiring a court petition by the injured party.
- Failure of conditions 3 or 4 (objective requirements) renders the contract null and void ab initio (batal demi hukum), deemed as having never existed.
Article 1338 KUHPerdata: Pacta Sunt Servanda & Good Faith
Article 1338 embodies the paramount doctrine of Indonesian contract law:
"Semua persetujuan yang dibuat secara sah berlaku sebagai undang-undang bagi mereka yang membuatnya. Persetujuan-persetujuan itu tidak dapat ditarik kembali selain dengan sepakat kedua belah pihak, atau karena alasan-alasan yang oleh undang-undang dinyatakan cukup untuk itu. Persetujuan-persetujuan harus dilaksanakan dengan itikad baik."(All agreements legally executed act as law for those who made them. They cannot be revoked except by mutual consent or for statutory reasons. Agreements must be executed in good faith.)
Doctrine of Good Faith (Itikad Baik / Te Goeder Trouw): Indonesian courts have established that good faith applies not only during contractual execution, but also throughout pre-contractual negotiations. Unfair surprise clauses or exploiting gross imbalances in bargaining power may lead a court to modify or invalidate punitive terms.
Corporate Governance: Company Law No. 40/2007
Under Law No. 40/2007 on Limited Liability Companies (UU PT) as updated by the Job Creation Law, an Indonesian Limited Liability Company (Perseroan Terbatas / PT) is governed through a two-tier board system consisting of three distinct statutory organs:
General Meeting of Shareholders (RUPS)
The supreme organ of the company that holds powers not delegated to the Board of Directors or Board of Commissioners, including amendment of Articles of Association, capital increases/reductions, approval of annual financial statements, and appointment/dismissal of board members.
Board of Directors (Direksi)
The executive organ fully responsible for the day-to-day management and representation of the company inside and outside court. Directors owe a fiduciary duty of care and loyalty, and may be held personally liable for gross negligence (Article 97).
Board of Commissioners (Dewan Komisaris)
The supervisory body tasked with overseeing company policies, budget adherence, and advising the Board of Directors. Commissioners also bear fiduciary liability if they fail to prevent preventable corporate harm (Article 114).
Manpower & Employment Law (UU 6/2023 & PP 35/2021)
Indonesian employment relationships are governed by the Manpower Law (UU No. 13/2003) as substantially amended by Law No. 6/2023 and Government Regulation No. 35/2021. There are two primary contract classifications:
- Fixed-Term Employment (PKWT): Restricted to temporary, non-permanent, project-based jobs with a statutory maximum cumulative duration of up to 5 years (including extensions). Crucially, employers must pay mandatory uang kompensasi upon contract expiration or termination.
- Indefinite-Term Employment (PKWTT): Standard permanent employment. May include a probation period up to 3 months. Termination requires bipartite negotiation, Disnaker mediation, and court approval if contested, with mandatory severance pay (uang pesangon) under statutory formulas.
- Social Security: Mandatory enrollment of all employees in BPJS Ketenagakerjaan (Accident, Death, Old Age, Pension, Unemployment) and BPJS Kesehatan (Healthcare).
Dispute Settlement & Arbitration (BANI & Courts)
Commercial parties in Indonesia can choose between state litigation or private commercial arbitration:
State Court Litigation (Pengadilan Negeri)
The default forum for disputes lacking an arbitration agreement. Appeals proceed to the High Court (Pengadilan Tinggi) and Supreme Court (Mahkamah Agung). Specialized courts include Commercial Courts (Pengadilan Niaga) for bankruptcy/IP and Industrial Relations Courts (PHI) for labor disputes.
Arbitration (BANI & International)
Regulated under Law No. 30/1999. Valid arbitration clauses bar state courts from hearing the dispute. The Indonesian National Board of Arbitration (BANI) provides neutral, confidential, and expeditious awards. Foreign arbitral awards are enforceable via Central Jakarta District Court under the 1958 New York Convention.
Foreign Direct Investment (PMA Framework)
Foreign investors operate under the Investment Law (Law No. 25/2007) and Presidential Regulation No. 10/2021 (Positive Investment List). Key statutory criteria:
- Minimum Investment Scale: Foreign companies must operate as large-scale enterprises with total investment above IDR 10 Billion per KBLI code (excluding land and buildings).
- Nominee Agreements Void: Article 33 of Law No. 25/2007 strictly prohibits nominee shareholder arrangements; contracts granting ownership rights to foreigners through Indonesian proxies are void by law.
- Bilingual Contract Requirement: Under Law No. 24/2009 on National Flag, Language, and Coat of Arms, contracts involving Indonesian parties must be executed in Bahasa Indonesia or bilingual format.