Compliance with the Worker Dispatching Act — Detailed Explanation

Note: “Worker Dispatching Act” generally refers to Japan’s Act on Securing the Proper Operation of Worker Dispatching Undertakings and Improved Working Conditions for Dispatched Workers (Worker Dispatching Act / 労働者派遣法). The explanation below is therefore based on Japanese law. The Act regulates both dispatching agencies (派遣元) and host companies (派遣先). Japan’s Ministry of Health, Labour and Welfare (MHLW) currently publishes detailed administrative guidance for worker-dispatching businesses.

1. Meaning and Purpose

Worker dispatching is a triangular employment arrangement:

Dispatched worker → employed by dispatching agency → works under the direction and supervision of the host company.

The Worker Dispatching Act regulates this relationship to prevent:

• illegal labour supply;
• disguised contracting;
• exploitation of dispatched workers;
• indefinite or unlawful use of dispatched labour;
• discriminatory treatment;
• inadequate working conditions;
• violations of occupational safety obligations; and
• evasion of direct-employment protections.

The statutory framework imposes obligations on both the dispatching agency and the host company. MHLW specifically identifies rules applicable to host companies, including appointment of a responsible person and the statutory employment-contract-offer mechanism for certain illegal dispatch arrangements.

2. Parties Covered

A. Dispatching agency — 派遣元

The dispatching agency is normally the worker's contractual employer.

Its responsibilities include:

• lawful operation of the dispatch business;
• employment contracts;
• wages;
• working conditions;
• provision of required information;
• appropriate management of dispatched workers;
• equal/balanced treatment obligations;
• social insurance and employment insurance compliance;
• maintaining required records; and
• ensuring that dispatch arrangements comply with statutory limitations.

B. Host company — 派遣先

The host company receives the worker's services and exercises workplace direction within the dispatch arrangement.

Its obligations include:

• complying with restrictions on the use of dispatched workers;
• observing applicable working-condition and safety requirements;
• providing necessary information to the dispatching agency;
• maintaining appropriate workplace conditions;
• appointing a 派遣先責任者 (responsible person for dispatched workers) where required; and
• avoiding arrangements that effectively constitute prohibited or unlawful dispatch.

MHLW expressly states that a host company must appoint a responsible person at the relevant establishment to centrally manage employment of dispatched workers and ensure proper working conditions.

3. Distinction Between Dispatch and Contracting

This is one of the most important compliance issues.

Lawful contracting

In a genuine contract-for-work arrangement, the contractor generally controls:

• how the work is performed;
• allocation of personnel;
• work instructions;
• supervision; and
• execution of the contracted work.

Worker dispatch

In worker dispatch, the dispatched worker is employed by the dispatching agency but works under the direction of the host company.

Disguised contracting — 偽装請負

A company may call an arrangement a "contract" or "outsourcing arrangement" while actually exercising direct control over workers supplied by another company.

This can create serious Worker Dispatching Act issues.

The Supreme Court's Panasonic Plasma Display (PDP) case is particularly important in this area. The Court considered a situation where workers formally employed by a contractor were directly instructed by the customer.

4. Equal and Balanced Treatment

Japanese reforms strengthened protections concerning differences between dispatched workers and workers employed directly by the host company.

For dispatched workers, the dispatching agency must generally adopt one of the statutory treatment mechanisms, including:

1. equal/balanced treatment based on comparison with workers at the dispatching destination, or
2. treatment under an appropriate labour-management agreement satisfying statutory requirements.

MHLW's explanatory material describes these two principal mechanisms for dispatched workers.

Relevant matters can include:

• basic wages;
• allowances;
• bonuses;
• retirement-related benefits;
• education and training;
• welfare facilities; and
• other working conditions.

Therefore, an employer cannot treat the dispatch relationship merely as a mechanism for obtaining labour at substantially different conditions without considering the statutory treatment requirements.

5. Restrictions on Dispatch Periods

The Worker Dispatching Act contains restrictions concerning the duration for which dispatched workers may be used.

Two important concepts are:

Establishment-level limitation

There are restrictions concerning the period for which an establishment may receive dispatched labour.

Individual-worker limitation

There are also restrictions concerning the period for which an individual dispatched worker may be assigned to certain work at the same establishment.

The consequences of violating these restrictions can be significant. MHLW specifically states that certain illegal dispatch arrangements, including violations of dispatch-period limitations, can trigger the employment-contract offer deemed mechanism.

6. Deemed Employment-Contract Offer System

One of the strongest compliance mechanisms is the statutory 労働契約申込みみなし制度.

Where the host company receives workers through certain unlawful dispatch arrangements, the host may legally be treated as having made an offer of an employment contract to the dispatched worker.

The mechanism is intended to make the host company bear consequences for certain unlawful use of dispatched labour.

The statutory framework includes situations such as:

• dispatch into prohibited work;
• certain violations of dispatch-period restrictions; and
• disguising a dispatch arrangement as another type of contract to evade the Worker Dispatching Act.

MHLW explains that, subject to the statutory exception for a host that neither knew nor was negligent in failing to know of the illegality, the deemed offer mechanism can apply.

7. Safety and Health

Worker dispatch does not eliminate workplace safety responsibilities.

Because the worker works at the host company's workplace, coordination between:

• dispatching agency;
• host company;
• safety personnel; and
• the dispatched worker

is essential.

The Act contains special rules concerning application of labour standards and related legislation to dispatched workers.

Compliance should therefore cover:

• workplace hazards;
• safety training;
• protective equipment;
• working hours;
• rest periods;
• accident reporting;
• occupational health;
• emergency procedures; and
• allocation of statutory responsibilities between dispatching agency and host.

8. Harassment and Equal-Opportunity Obligations

The host company can also have statutory responsibilities concerning protection of dispatched workers from workplace harassment and discrimination.

The Worker Dispatching Act contains provisions under which certain employment-related legislation applies to the host company in relation to dispatched workers.

Accordingly, the host company should ensure that dispatched workers are covered by appropriate:

• harassment-prevention measures;
• complaint mechanisms;
• anti-retaliation protections;
• workplace policies; and
• investigation procedures.

9. Records and Documentation

A compliant organisation should maintain:

Dispatching agency records

• employment contracts;
• dispatch agreements;
• working-condition notices;
• wage records;
• treatment-comparison documentation;
• labour-management agreements where applicable;
• working-hour records;
• social-insurance documentation; and
• training records.

Host-company records

• dispatch contracts;
• work descriptions;
• period-limit calculations;
• information provided to the dispatching agency;
• responsible-person appointment records;
• workplace safety records;
• attendance records;
• overtime records;
• training documentation; and
• correspondence concerning dispatched workers.

The objective is to establish an auditable chain showing who employed the worker, who directed the work, what work was authorised, for how long, and under what conditions.

10. Compliance Audit Checklist

A host company should periodically examine:

11. Six Important Case Laws

1. Asahi Broadcasting Corporation Case — Supreme Court, 28 February 1995

This is a leading Japanese Supreme Court decision concerning the status of the organisation receiving workers from another company.

The Court held, in the context of the Trade Union Act, that an entity other than the formal employer may qualify as an "employer" where it receives workers and has a position in which it can realistically and concretely control or determine important working conditions to a degree comparable to the formal employer.

The case involved workers performing broadcasting-related technical work under an arrangement involving subcontractors. MHLW identifies the case as an important authority on the status of the receiving company.

Compliance significance

A company cannot necessarily avoid legal responsibilities merely by arguing:

"These people are employed by another company."

The actual degree of control over working conditions can matter.

2. Panasonic Plasma Display (PDP) Case — Supreme Court, 18 December 2009

This is one of the most important cases concerning disguised contracting and unlawful dispatch.

A worker was formally employed by a contractor but worked at the customer's factory and received direct, specific instructions from the customer. The arrangement was found to constitute an unlawful worker-dispatch situation rather than genuine contracting.

However, the Supreme Court did not automatically conclude that an employment contract between the customer and worker existed merely because the dispatch arrangement was unlawful.

Compliance significance

The case establishes an important distinction:

Illegal dispatch ≠ automatic direct employment in every case.

Whether an implied employment contract exists requires additional factual analysis.

3. Iyo Bank / Iyogin Staff Service Case

This case concerned a worker employed by a dispatching company and assigned to Iyo Bank.

The worker's fixed-term employment had been renewed repeatedly over many years, and the dispute concerned termination/non-renewal, the employment relationship with the dispatching agency, and possible employment-related responsibility of the host company.

The litigation ultimately reached the Supreme Court, which rejected the worker's appeal in 2009. MHLW records the case and its procedural history.

Compliance significance

The case demonstrates the importance of distinguishing:

• the employment relationship with the dispatching agency;
• the dispatch relationship with the host;
• the duration of the dispatch arrangement; and
• expectations concerning continued employment.

Long-term assignment does not, by itself, automatically transform every dispatch relationship into direct permanent employment.

4. Mazda Case — Yamaguchi District Court, 13 March 2013

In the Mazda case, dispatched workers sought recognition of employment relationships with the automobile manufacturer.

The court considered the circumstances surrounding the use of dispatched workers beyond statutory limitations and the actual degree of control exercised by the host company.

The case is significant because the court found an implied employment relationship in the particular factual circumstances before it. MHLW materials identify Mazda and Panasonic PDP among the important Japanese cases concerning implied employment contracts involving dispatched workers.

Compliance significance

The case demonstrates why companies should not rely solely on the formal wording of contracts.

Actual practice matters.

If the host company effectively determines:

• working conditions;
• remuneration;
• allocation of work;
• supervision; and
• employment-related arrangements,

the legal analysis can become substantially more complicated.

5. Hyogo Prefecture / Hyogo Labour Relations Commission — Kawasaki Heavy Industries Case

This litigation concerned the issue of whether the entity receiving workers could have responsibilities concerning collective bargaining even though it was not the formal employer.

MHLW identifies the case among important judicial examples concerning collective-bargaining obligations involving workers in outsourced/dispatch-like arrangements.

Compliance significance

The case illustrates that organisations using non-standard labour arrangements must consider not only the Worker Dispatching Act but also:

• Trade Union Act obligations;
• collective bargaining;
• actual control over working conditions; and
• the host company's relationship with workers and their union.

6. Iyo Bank / Iyogin Staff Service — Takamatsu High Court, 18 May 2006

The Takamatsu High Court decision concerned a worker who had been employed through the dispatching company for approximately 13 years, with repeated fixed-term renewals.

The dispute involved whether the non-renewal was legally permissible and whether the worker could assert an employment relationship with the host bank.

The case illustrates the legal complexity created when fixed-term dispatch employment is repeatedly renewed over a long period. MHLW's materials specifically discuss the case as an example concerning the nature of the employment contract in worker dispatch arrangements.

Compliance significance

Companies should not assume that repeatedly renewing dispatch-related employment contracts eliminates legal risk. They should document:

• the genuine business reason for the assignment;
• contract duration;
• renewal process;
• assignment duration;
• responsibilities of the dispatching agency; and
• the host company's role.

12. Recent Judicial Development: Contractual Conversion and the Deemed-Offer System

A particularly relevant recent Japanese decision is the Japan Cargo Inspection Association case decided by the Tokyo District Court.

The court considered the operation of the statutory deemed-employment-contract mechanism under Article 40-6. The decision explains that the mechanism is designed to give effectiveness to the regulation of unlawful dispatch by imposing consequences on a recipient of unlawfully dispatched labour, subject to the statutory conditions.

The case also examined a situation in which an earlier disguised-contract arrangement was replaced with a formal worker-dispatch agreement and considered when the deemed offer ceased to operate.

Compliance significance

This demonstrates that companies should not assume that changing the label or contractual form of an arrangement automatically resolves historical Worker Dispatching Act exposure. The precise facts and timing of the unlawful conduct matter.

13. Major Compliance Risks

Risk 1 — Disguised contracting

Calling an arrangement "outsourcing" while directly managing workers may create unlawful dispatch concerns.

Risk 2 — Exceeding dispatch-period limits

Companies should calculate both:

• establishment-level limits; and
• worker-level limits.

Risk 3 — Inadequate equal-treatment documentation

The chosen statutory treatment mechanism should be documented and consistently implemented.

Risk 4 — Incorrect job description

A worker should not routinely perform materially different work from that covered by the dispatch arrangement.

Risk 5 — Direct employment risk

Certain violations can trigger the statutory deemed-offer mechanism.

Risk 6 — Safety failures

The host company cannot treat dispatched workers as outside its workplace safety system.

Risk 7 — Harassment

Dispatched workers must not be excluded from workplace harassment-prevention mechanisms.

Risk 8 — Misclassification

A company should examine the substance of the relationship, not merely the contractual title.

14. Recommended Corporate Compliance Framework

A company using dispatched workers should implement a Worker Dispatching Act Compliance Register containing:

1. dispatching agency;
2. agency authorisation status;
3. worker identity;
4. job description;
5. workplace;
6. dispatch start date;
7. applicable statutory limitation date;
8. individual assignment limitation;
9. treatment/equal-treatment method;
10. responsible person;
11. safety-training status;
12. harassment-policy coverage;
13. working-hours monitoring;
14. contract expiry;
15. renewal history; and
16. direct-employment/deemed-offer risk assessment.

A quarterly compliance review should compare the contractual arrangement against actual workplace practice.

Conclusion

Compliance with Japan's Worker Dispatching Act requires more than maintaining a valid contract with a staffing agency. The organisation must ensure that the actual working arrangement, period of dispatch, treatment of workers, workplace safety, supervision, documentation and contractual structure comply with the statutory framework.

The case law demonstrates several recurring principles:

• Asahi Broadcasting — actual control can be relevant to determining the legal status of the host organisation. 
• Panasonic Plasma Display — unlawful dispatch does not automatically create a direct employment relationship; the facts must establish the necessary contractual relationship. 
• Iyo Bank / Iyogin Staff Service — repeated fixed-term dispatch employment raises important questions concerning renewal and the respective roles of dispatching agency and host.
• Mazda — actual circumstances of control and unlawful dispatch arrangements can, in particular factual circumstances, support recognition of an implied employment relationship. 
• Kawasaki Heavy Industries — host-company relationships can also raise collective-labour-law issues beyond the formal employment contract. 
• Japan Cargo Inspection Association — the statutory deemed-employment mechanism can have continuing significance when unlawful dispatch arrangements are involved. 

Accordingly, the safest compliance approach is to audit both the paperwork and the reality of the workplace relationship.