Remote-first companies occupy a peculiar position when they want to hire in Japan. They have no headquarters in the traditional sense. They have no Japan office, no local HR department, and often no existing relationship with any Japanese institution. Their entire workforce may be distributed across a dozen countries, each employee working from home under an arrangement that the company treats as standard and uncomplicated. Japan breaks that pattern immediately. Japanese employment law applies the moment a company places a worker in Japan, regardless of where the company itself is incorporated or where it maintains its offices. Social insurance is mandatory. The employment contract must meet specific legal standards. The company's standard English-language offer letter is not an employment contract under Japanese law. An EOR (Employer of Record, 雇用主代行) arrangement is the mechanism that allows a fully remote company to hire compliantly in Japan without forming a Japan entity, without opening a Japan office, and without a Japan HR function.
What Remote-First Actually Means for Japan Compliance
Remote-first companies sometimes assume that because their employee works from home, the employment relationship is less regulated than office-based employment. In Japan, the opposite is true. The Labor Standards Act (労働基準法) applies to all employment in Japan regardless of work location. An employee working from their apartment in Tokyo under an arrangement with a company incorporated in Delaware is an employee in Japan under Japanese law. That employee is entitled to all statutory protections: minimum wage standards set under the Minimum Wages Act (最低賃金法), overtime calculation rules, mandatory paid leave accrual, and protection against sudden dismissal.
Social insurance is equally non-negotiable. An employee working more than a certain number of hours per week must be enrolled in Japan's health insurance scheme under the Health Insurance Act (健康保険法) and in the Employees' Pension Insurance (厚生年金保険) under the Employees' Pension Insurance Act (厚生年金保険法). The employer must register with the Japan Pension Service (日本年金機構) and the relevant health insurance association, withhold the employee's share, and remit both the employee and employer contributions each month. None of this changes because the employer is a foreign company. What changes is the practical question of how those obligations are discharged when the employer has no Japan legal presence.
The answer is an EOR. The EOR provider is a Japan-registered entity that becomes the legal employer (雇用主) of the candidate. The EOR signs the employment contract with the Japan-based employee in Japanese, enrolls the employee in social insurance, runs payroll in Japanese yen, files income tax withholding (源泉徴収) with the National Tax Agency (国税庁), and handles every statutory employer obligation. The foreign company directs the employee's actual work and deliverables under a separate commercial services agreement between the foreign company and the EOR. The arrangement is legally clean: the EOR is the employer; the foreign company is the commercial principal.
The Employment Contract: Why Your Standard Offer Letter Does Not Work
Remote-first companies often use global employment contract templates that are lightweight, governed by the law of the company's home jurisdiction, and focused on role scope and compensation rather than statutory compliance. These documents do not serve as employment contracts under Japanese law.
The Labor Standards Act (労働基準法) requires that employment contracts in Japan explicitly state: the period of employment or the fact that employment is indefinite, the place of work and the nature of the work, working hours (start time, end time, rest periods), overtime rules, rest days, leave entitlements including annual paid leave, wage amount and calculation method, pay cycle, and termination conditions. Contracts that omit any of these terms create compliance gaps that cannot be resolved after the fact by reference to a company handbook.
Under an EOR arrangement, the EOR prepares the employment contract in Japanese, with all required statutory terms. The foreign company reviews the scope of work and compensation terms; the EOR ensures the contract meets the Labor Standards Act (労働基準法) requirements. The employee receives a compliant contract in their working language. For remote-first companies that have never operated in Japan, this drafting step is where most of the compliance value of an EOR arrangement actually sits.
Overtime, Working Hours, and the 36 Agreement
Remote-first companies with flexible or asynchronous work cultures frequently have no concept of overtime tracking. Their employees work when they want, as long as output is delivered. Japan does not accommodate that framework without documentation.
Under the Labor Standards Act (労働基準法), the statutory working hour limit is 8 hours per day and 40 hours per week for most employees. If a Japan-based employee regularly works beyond those hours as a result of their role requirements, the employer must file a written agreement with the local Labor Standards Inspection Office (労働基準監督署). This agreement, known as a 36 Agreement (三六協定) after the relevant article of the Labor Standards Act, sets the permitted overtime ceiling and triggers overtime premium pay obligations. Without this agreement, overtime above the statutory limits is not permissible regardless of whether the employee is salaried, exempt from overtime under their role classification, or works voluntarily.
For remote-first companies whose Japan-based employees work independently outside defined hours, the EOR handles the 36 Agreement filing and ensures overtime calculations are built into payroll. The foreign company's role is to provide the EOR with an accurate description of the expected working pattern so the agreement is structured appropriately.
IP Ownership: Who Owns What the Employee Creates
This is the single most consequential issue for remote-first tech companies hiring in Japan and the most frequently overlooked.
Under Japan's Patent Act (特許法), the default rule for inventions created by an employee in the course of their work is that the invention belongs to the employee, not the employer. An employer can acquire ownership of employee inventions, but only through a pre-existing written agreement or workplace rules (就業規則) that provide for assignment of inventions in exchange for reasonable compensation. An arrangement where the employment contract simply states that all work product belongs to the employer is not legally effective in Japan without meeting this requirement.
For copyright, the default under the Copyright Act (著作権法) is different: works created by an employee within the scope of their employment duties are works made for hire, and copyright initially vests in the employer entity, subject to the employment contract. For software written by a Japan-based employee in the course of their employment, the copyright default is employer ownership.
The practical implications for remote-first tech companies:
(a) For inventions (including software that is the subject of a patent application, hardware designs, and certain process innovations), the employment contract must include a properly structured invention assignment clause that designates the compensation to the employee for the assignment. An employment contract that lacks this clause, or that relies on a blanket "all work product is employer property" clause without the compensation mechanism, does not effectively transfer invention rights in Japan.
(b) For copyrightable works (standard software code, written content, design outputs created within employment scope), the employer-default rule under the Copyright Act (著作権法) generally applies, and no separate assignment is required for works created within the scope of employment.
(c) For work product that sits in ambiguous territory (open-source contributions, side projects developed on personal time but using company tools, dual-purpose technical work), explicit contract terms aligned to Japanese law are the only way to resolve the ownership question before it becomes a dispute.
Under an EOR arrangement, the employment contract is governed by Japanese law. The IP clauses in that contract must meet the Japanese legal standard for invention assignment, not the standard of the foreign company's home jurisdiction. The EOR and its legal counsel draft the contract; the foreign company must review the IP terms specifically and confirm they meet the requirements of the Patent Act (特許法) for the type of work product the employee will create.
Permanent Establishment Risk: When a Remote Employee Creates a Tax Obligation
Permanent establishment (恒久的施設, PE) is the concept in Japan's tax treaties that determines when a foreign company's activities in Japan are sufficient to create a Japan corporate tax filing obligation. A fixed place of business in Japan is the classic PE trigger: an office, a factory, a construction site. But PE can also arise from the activities of a dependent agent, meaning a person who habitually exercises authority to conclude contracts in Japan on behalf of the foreign company.
For remote-first companies, the relevant question is not whether the company has a Japan office. It is whether the Japan-based employee's activities constitute dependent agency. An employee who identifies prospects, gives product demonstrations, and passes leads to a sales team in the foreign company's home country is generally not a dependent agent. An employee who negotiates prices, commits the company to contractual terms, and routinely closes deals in Japan on the company's behalf is a stronger PE candidate, and the specific facts require a tax analysis under the applicable Japan tax treaty.
The EOR structure does not itself resolve the PE question. The EOR is the employer; the foreign company is the economic principal directing the work. If the foreign company's business activities in Japan, as conducted through the EOR employee, rise to the level of a PE, the EOR arrangement provides no shelter from that conclusion. The PE risk must be assessed by qualified tax counsel familiar with the applicable tax treaty before the employee begins work, not after operations are running.
This is the most important structural constraint for remote-first companies using EOR in Japan. It is also the most frequently deferred. Companies that assess it early, structure the employee's role to stay below PE thresholds (or choose to form a Japan entity instead), avoid the consequences of retroactive PE determinations, which can include back-tax assessments, penalties, and mandatory filing obligations.
Social Insurance Costs: What to Budget
Japan's social insurance framework adds meaningful cost on top of base salary. These costs are not optional and cannot be contracted away in the employment agreement.
The employer's mandatory contributions under a standard full-time employment arrangement include:
(a) Health insurance premium: approximately 9.5 to 10% of monthly standard remuneration, with the employer bearing half (roughly 4.75 to 5%). The exact rate varies by health insurance association and prefecture.
(b) Employees' Pension Insurance premium: currently 18.3% of monthly standard remuneration, split equally between employer and employee (employer bears 9.15%).
(c) Employment insurance (雇用保険) premium: a small percentage of total wages, with the employer bearing the majority (currently around 0.85% for general industries).
(d) Workers' accident compensation insurance (労災保険): fully employer-paid, at rates that vary by industry category.
The combined employer-side statutory contribution burden typically runs 14 to 16% of the employee's gross salary for standard full-time employment in Japan, on top of the salary itself. The EOR provider passes these costs through to the foreign company plus an EOR service fee. Remote-first companies that budget only for gross salary will encounter a meaningful cost variance when the first EOR invoice arrives.
When an EOR Becomes a Japan Entity
The EOR structure is the right pre-entity solution for most remote-first companies making a first hire in Japan. It has real limits, and those limits are worth naming clearly.
At three to five employees under EOR, the monthly EOR service fee layered on top of statutory contributions and gross salaries begins to approach the annual overhead cost of a Japan KK (株式会社). At five to eight employees, the economic case for entity formation typically becomes clear on pure cost grounds, independent of any other operational consideration.
Beyond cost, an EOR structure also constrains the company's Japan-facing commercial identity. The employer of record is the EOR provider's entity. The foreign company's name does not appear on employment contracts. For some senior hires, particularly Japan-based country managers or executives who will be publicly representing the company in Japan, the absence of the company's own legal entity as the named employer creates a credibility gap in the local market.
The right time to form a Japan entity is when actual Japan operating data, not projections, supports the overhead commitment. The EOR structure is the mechanism for getting that data without prematurely committing to entity overhead.
This article is informational only and does not constitute legal, tax, or labor law advice. Permanent establishment assessments require qualified tax counsel familiar with the applicable Japan tax treaty and the specific activities of the employee. IP assignment requirements under the Patent Act (特許法) require employment contract review by a qualified attorney. Consult qualified advisors before implementing any employment arrangement in Japan. Aplash is a regulatory strategy and market entry firm. Last updated: July 2026.