This Japan business law guide organizes the main statutes foreign companies usually encounter when entering, operating in, investing in, or contracting with Japan. It links to statute-specific articles on company formation, contracts, personal data, employment, tax, finance, intellectual property, competition, trade, and consumer transactions. The guide is a navigation page for research, not advice on whether a particular law applies to a particular company.

Start with the legal hierarchy before reading individual statutes. Japanese Acts often delegate details to Cabinet Orders, Ministerial Ordinances, Cabinet Office Orders, public notices, and administrative materials.

For the hierarchy of Acts, Cabinet Orders, Ministerial Ordinances, and local rules, read Japanese Legal System: Acts, Cabinet Orders, and Ordinances. For a shorter terminology reference, read Types of Japanese Legislation: A Reference Guide. If the task is source research, Finding Japanese Laws in English: Official Sources explains how to use elaws.jp, e-Gov Law Search, and Japanese Law Translation together.

For business vehicles, the central statute is the Companies Act: Forms, Governance, and Reorganization. It explains Stock Companies, Membership Companies, incorporation, shares, Shareholders Meetings, Directors, financial statements, dividends, and reorganizations. For the common K.K. versus G.K. comparison, read Kabushiki Kaisha vs Godo Kaisha: Corporate Forms.

Contracts, Data, and Commercial Transactions

Most business operations require a mix of private-law, privacy, and consumer-transaction checks. The relevant statute depends on the transaction type and the role of the company.

For contracts and civil liability, read Civil Code: Contracts, Obligations, and Property. It covers general principles, juristic acts, ownership, obligations, default, damages, named contracts, torts, and inheritance. For personal data, read Japan APPI: What Businesses Need to Know About Personal Data, which explains the Act on the Protection of Personal Information at an overview level.

For e-commerce, subscription services, door-to-door sales, telemarketing, multilevel marketing, and specified continuous services, read Specified Commercial Transactions Act: Sales Rules. For product imitation, business identifiers, Trade Secrets, Limited Provided Data, domain names, and misleading commercial indications, read Unfair Competition Prevention Act: Trade Secrets.

Employment and Workplace Regulation

Employment law is spread across several statutes. A foreign employer should not assume that one employment contract article covers working hours, safety, equality, fixed-term contracts, and harassment measures.

For baseline working conditions, read Labor Standards Act: Hours, Wages, and Work Rules. It covers Workers, Employers, Wages, labor contracts, dismissal notice, wage payment, working hours, rest periods, days off, overtime, paid annual leave, Work Rules, and labor inspection. For safety and health systems, read Industrial Safety and Health Act: Workplace Duties.

For sex discrimination, pregnancy-related treatment, sexual harassment measures, maternity-health measures, and mediation, read Equal Employment Opportunity Act: Gender and Work. For work-rule changes, transfers, discipline, dismissal, fixed-term contracts, and indefinite-term conversion, read Employment Contract Act: Work Rules and Fixed Terms. For foreign-worker employment notifications, treatment-work support, and workplace harassment measures, read Labour Policy Act: Employment Stability and Harassment.

Tax, Finance, and Investment Controls

Tax and financial regulation require careful separation between statute, subordinate rules, forms, and agency guidance. The overview articles identify the statutory starting points rather than filing conclusions.

For consumption tax, read Consumption Tax Act: Scope, Credits, and Filing. It explains taxable transactions, taxpayers, exemptions, input tax credits, returns, payment, refunds, and qualified invoice issuer registration. For corporate tax, read Corporate Tax Act: Taxpayers, Income, and Returns, which covers domestic and foreign corporations, taxable income, deductions, rates, returns, payment, and refunds.

For securities disclosure, financial instruments businesses, tender offers, large shareholding reports, market operators, and supervision, read FIEA: Disclosure, Registration, and Market Rules. For foreign exchange, payments, capital transactions, inward direct investment, export controls, and import approvals, read FEFTA: Payments, Trade, and Inward Investment. For insurance licensing and solicitation, read Insurance Business Act: Licenses and Solicitation.

Intellectual Property and Competition

IP and competition statutes protect different interests. A brand, technology, data set, or distribution arrangement may require checking more than one statute.

For trademarks, read Trademark Act: Registration, Rights, and Renewal. For inventions and patent rights, read Patent Act: Inventions, Applications, and Rights. For works, authors, moral rights, copyrights, limitations, publication rights, neighboring rights, and remedies, read Copyright Act: Works, Rights, and Limitations.

For unfair competition topics that may overlap with IP but are not identical to registration-based rights, read Unfair Competition Prevention Act: Trade Secrets. For cartels, private monopolization, unfair trade practices, business combinations, and Japan Fair Trade Commission procedures, read Antimonopoly Act: Cartels, Dominance, and M&A.