Industrial Accident Compensation Insurance Act

労働者災害補償保険法（ろうどうしゃさいがいほしょうほけんほう）

The government-run insurance that pays benefits to workers injured, made ill, disabled or killed through their work or on their way to and from work, and to their families, and helps them return to working life.

Text in force since
Promulgated
Articles: 98
Amendments on the way: 2

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What this law does

The insurance pays benefits for an occupational accident (業務災害) — a worker's injury, illness, disability or death arising from their work; for a multiple-job accident (複数業務要因災害) — one caused by the work of two or more jobs, for a worker whose employers are not the same person (複数事業労働者, including people a Ministry of Health, Labour and Welfare Order (厚生労働省令) treats alike), where it is not already an occupational accident; and for a commuting accident (通勤災害). It also provides follow-up health examinations (二次健康診断等給付). Each kind of accident has its own set of benefits — medical treatment, loss of salary, disability, survivors, funeral, injury-and-illness pension and nursing care — mostly on the rules for the occupational ones, applied under their own names, except that for multiple-job and commuting accidents an illness is covered only if it is one a Ministry of Health, Labour and Welfare Order lists.(Art. 7(1), Art. 12-8(1), Art. 20-2(1), Art. 21(1), Art. 20-3(1), Art. 20-3(2), Art. 22(1), Art. 22(2), Art. 20-4(2), Art. 22-2(2)) (the provisions it rests on)

Read the full overview

Commuting (通勤) means travel for work, by a reasonable route and means, between home and the workplace, from one workplace to another as a Ministry of Health, Labour and Welfare Order specifies, or between residences before or after the trip between home and work where that Order's conditions are met; travel that is itself part of the work does not count. A worker who leaves the route or breaks off the journey is not commuting during the detour or break, nor for the rest of that journey. The exception is a minimal detour or break, for unavoidable reasons, to do something needed in daily life that the Order lists: the journey counts again once the worker is back on the route, though the detour itself still does not.(Art. 7(2), Art. 7(3)) (the provisions it rests on)
The base daily amount (給付基礎日額) on which most benefits are figured is the worker's average wage under Article 12 of the Labor Standards Act, taking the day of the accident or of the diagnosis of the illness as its starting point, or an amount the government calculates under a Ministry of Health, Labour and Welfare Order where the average wage is not appropriate; for a worker with multiple jobs, the amounts for each employer are added together as its basis. It is adjusted when average salaries change — for the loss-of-salary payment, once they have moved by more than 10% — and for pensions, and for the loss-of-salary payment after a year and a half of treatment, it is kept between a minimum and a maximum the Minister of Health, Labour and Welfare sets for each age group.(Art. 8(1), Art. 8(2), Art. 8(3), Art. 8-2(1), Art. 8-2(2), Art. 8-3(1), Art. 8-3(2), Labor Standards Act Art. 12(1)) (the provisions it rests on)
For an occupational accident, the medical treatment benefit (療養補償給付) is treatment itself — examination, medicine, procedures and surgery, care at home, hospital stays and transport, as far as the government considers them necessary — and the government may pay its cost instead where giving treatment is difficult or in other cases a Ministry of Health, Labour and Welfare Order sets. A worker who cannot work because of that treatment and is not paid wages receives the compensation payment for loss of salary (休業補償給付) from the fourth day without wages, at 60% of the base daily amount a day; on a day when the worker works only part of the scheduled hours, or takes paid leave, it is 60% of the base daily amount less the wages paid for that day; where the age-group maximum is being applied in place of the base daily amount (from a year and a half after treatment began), the base daily amount without that maximum is used, and what is left is capped at the maximum. Where the worker can also receive, for the same cause, a disability pension under the Employees' Pension Insurance Act or the National Pension Act, the payment is reduced by a rate a Cabinet Order (政令) sets, but not below an amount that Order sets.(Art. 13(1), Art. 13(2), Art. 13(3), Art. 14(1), Art. 8-2(2), Art. 14(2), Art. 12-8(2), Appended Table 1) (the provisions it rests on)
A worker left with a disability once the injury or illness has healed receives disability compensation (障害補償給付) by the grade a Ministry of Health, Labour and Welfare Order sets: for grades 1 to 7, a pension of 313 down to 131 days of the base daily amount; for grades 8 to 14, a lump sum of 503 down to 56 days. Where, for the same cause, a pension under the Employees' Pension Insurance Act or the National Pension Act is also paid — a disability pension beside this insurance's disability or injury-and-illness pension, or a survivors' or widow's pension beside its survivors' pension — this insurance's pension is reduced by a rate a Cabinet Order (政令) sets, but not below an amount that Order sets.(Art. 15(1), Art. 15(2), Art. 12-8(2), Labor Standards Act Art. 77(1), Art. 20-5(1), Art. 22-3(1), Appended Table 1, Appended Table 2) (the provisions it rests on)
A worker whose injury or illness has not healed a year and six months after treatment began, and whose condition matches an injury-and-illness grade (傷病等級) a Ministry of Health, Labour and Welfare Order sets, receives an injury-and-illness compensation pension (傷病補償年金) of 313, 277 or 245 days of the base daily amount (grades 1 to 3) while that lasts, and no longer receives the loss-of-salary payment. A worker on a disability or injury-and-illness pension who needs, and is receiving, constant or occasional care because of a disability of the degree the Order sets receives a monthly nursing care compensation benefit (介護補償給付) of an amount the Minister of Health, Labour and Welfare sets — but not while in a hospital or clinic, or living in a disability support facility (障害者支援施設) while receiving daily-life care there, or in a similar facility the Minister names.(Art. 12-8(3), Art. 18(1), Art. 18(2), Art. 12-8(4), Art. 19-2(1), Appended Table 1) (the provisions it rests on)
Until 31 March 2027: A survivors' compensation pension (遺族補償年金) goes to the worker's spouse, children, parents, grandchildren, grandparents and siblings who depended on the worker's income, with these conditions met at the time of the death: a wife (including a de facto wife) needs no further one; a husband, parent or grandparent must be 60 or over; a child or grandchild must not yet have passed the first 31 March after turning 18; a sibling must meet either of those; and any of them outside those limits qualifies if in a state of disability a Ministry of Health, Labour and Welfare Order sets. A child in the womb at the death counts, once born, as a dependent child, and the pension is paid to the first in the order spouse, children, parents, grandchildren, grandparents, siblings. It is 153 days of the base daily amount for one survivor (175 days for a wife aged 55 or over or in that state of disability), up to 245 days for four or more — counting those living with the recipient who could also receive it — and is shared equally among those with the same right.(Art. 16-2(1), Art. 16-2(2), Art. 16-2(3), Art. 16-3(1), Art. 16-3(2), Art. 11(1), Appended Table 1) (the provisions it rests on)
From 1 April 2027: For a survivors' compensation pension that first becomes payable on or after 1 April 2027, the spouse — husband or wife, including a de facto spouse — who depended on the worker's income needs no further condition; the others who depended on it must, at the time of the death, be a parent or grandparent aged 60 or over, a child or grandchild not yet past the first 31 March after turning 18, or a sibling meeting either of those, and any of them outside those limits qualifies if in a state of disability a Ministry of Health, Labour and Welfare Order sets. The pension for one survivor becomes 175 days of the base daily amount, with the same order of priority, the same rule for a child in the womb, and the same 201 to 245 days for more. A pension already payable before that day keeps the earlier rules on who qualifies, but its amount follows the new table from that day.(Art. 16-2(1), Art. 16-2(2), Art. 16-2(3), Art. 16-3(1), Art. 16-3(2), Art. 11(1), Appended Table 1, Suppl. Prov. Art. 1(1), Suppl. Prov. Art. 2(1), Suppl. Prov. Art. 2(2)) (the provisions it rests on)
A survivors' pension right ends when the survivor dies; marries, including a de facto marriage; is adopted by someone other than a direct blood relative or relative by marriage; has their family tie to the worker ended by dissolving an adoption; for a child, grandchild or sibling, once the first 31 March after they turn 18 has passed, unless they have been in the disability state the Order sets since the worker's death; or, for one who qualified only by that disability, when it ends, unless they meet the age conditions above. If no one of the same rank remains, the pension then passes to the next survivor in order.(Art. 16-4(1), Art. 16-4(2)) (the provisions it rests on)
Where no one qualifies for the survivors' pension, the survivors receive a lump sum (遺族補償一時金) of 1,000 days of the base daily amount — first the spouse, then the children, parents, grandchildren and grandparents who depended on the worker, then the others and the siblings; where the last pension right ends with no one else to take it, they receive the part of that 1,000 days not yet paid as pension. Whoever holds the funeral receives a funeral fee (葬祭料) of an amount the Minister of Health, Labour and Welfare sets, having regard to the usual cost of a funeral.(Art. 16-6(1), Art. 16-7(1), Art. 16-7(2), Art. 16-8(1), Appended Table 2, Art. 17(1), Art. 12-8(2)) (the provisions it rests on)
The right to benefits does not change when the worker leaves the job, and it cannot be transferred, pledged as security or seized — except that a pension right already pledged, or applied to be pledged, to the Welfare and Medical Service Agency (独立行政法人福祉医療機構) for one of the small loans that Act No. 40 of 2020 brought to an end, at the time that Act took effect, may still be pledged, and so may a new pension right that replaces it. No tax or other public charge may be levied on the money or goods received as benefits.(Art. 12-5(1), Art. 12-5(2), Art. 12-6(1), Suppl. Prov. Art. 80(1), Suppl. Prov. Art. 80(2), Suppl. Prov. Art. 81(2)) (the provisions it rests on)
A worker whose most recent health check — under Article 66(1) of the Industrial Safety and Health Act (a separate Act), or the check under the proviso to Article 66(5) of that Act, which a worker may have done by a doctor of their own choosing — found an abnormality in every one of the tests a Ministry of Health, Labour and Welfare Order lists as bearing on work-related brain and heart disease, such as blood pressure and blood tests, can claim follow-up health examination benefits (二次健康診断等給付): a further examination by a doctor, once a year, and one session of health guidance in person from a doctor or public health nurse after it. They are not given to a worker already found, from that check or otherwise, to have symptoms of such a disease, and the health guidance is not given where the follow-up examination finds such symptoms.(Art. 26(1), Art. 26(2), Art. 26(3)) (the provisions it rests on)
Beside the benefits, the government may run projects to promote social reintegration (社会復帰促進等事業) for workers of covered businesses and their survivors: treatment and rehabilitation facilities; support for injured workers' treatment and care, schooling for survivors, and loans to injured workers and survivors; and help with accident prevention, health check facilities and securing the payment of wages. Some of these are carried out by the Japan Organization of Occupational Health and Safety (労働者健康安全機構).(Art. 2-2(1), Art. 29(1), Art. 29(3)) (the provisions it rests on)

Article 1 states the law's own purpose

Occupational accidentsCommuting accidentsBase daily amountLoss-of-salary paymentSurvivors' pensionSpecial enrolmentAppealsTime limits for claims

98 552 187 87 135

Amendments

A Japanese law is changed by another law or order that rewrites it — an . This law has 2 amendments on the way — , but . Its amendment history is below. The amendments this site has read the changes of are on this law's amendments page, provision by provision, in Japanese and English.

1 April 2027

in 6 months

Act Partially Amending the Industrial Accident Compensation Insurance Act, etc.

労働者災害補償保険法等の一部を改正する法律

The whole text as it will read, on e-Gov

See what it changes (42 provisions)

By 16 July 2031

at the latest, in 5 years

Act Partially Amending the Industrial Accident Compensation Insurance Act, etc.

労働者災害補償保険法等の一部を改正する法律

The whole text as it will read, on e-Gov

On a day set by , no later than 16 July 2031 — the amending law allows up to five years from . The exact day is not fixed yet.

See what it changes (6 provisions)

16 amendments already in force

17 July 2026
The text on this site
Act Partially Amending the Industrial Accident Compensation Insurance Act, etc.
労働者災害補償保険法等の一部を改正する法律
The text after this amendment, on e-Gov
13 May 2026
Act Partially Amending the Mariners Act, etc.
船員法等の一部を改正する法律
The text after this amendment, on e-Gov
1 June 2025
Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Penal Code, etc.
刑法等の一部を改正する法律の施行に伴う関係法律の整理等に関する法律
The text after this amendment, on e-Gov
17 June 2022
Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Penal Code, etc.
刑法等の一部を改正する法律の施行に伴う関係法律の整理等に関する法律
The text after this amendment, on e-Gov
1 April 2022
Act Partially Amending the National Pension Act, etc. to Strengthen the Functions of the Pension System
年金制度の機能強化のための国民年金法等の一部を改正する法律
The text after this amendment, on e-Gov
1 September 2020
Act Partially Amending the Employment Insurance Act, etc.
雇用保険法等の一部を改正する法律
The text after this amendment, on e-Gov
5 June 2020
Act Partially Amending the National Pension Act, etc. to Strengthen the Functions of the Pension System
年金制度の機能強化のための国民年金法等の一部を改正する法律
The text after this amendment, on e-Gov
1 April 2020
Act Partially Amending the Employment Insurance Act, etc.
雇用保険法等の一部を改正する法律
The text after this amendment, on e-Gov
1 April 2020
Act Partially Amending the Act on the Abolition, etc. of the Mutual Aid Association Act for Employees of Agricultural, Forestry and Fishery Organizations, etc. to Integrate the Employees' Pension Insurance System and the Mutual Aid Association System for Employees of Agricultural, Forestry and Fishery Organizations
厚生年金保険制度及び農林漁業団体職員共済組合制度の統合を図るための農林漁業団体職員共済組合法等を廃止する等の法律の一部を改正する法律
The text after this amendment, on e-Gov
1 April 2020
Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Civil Code
民法の一部を改正する法律の施行に伴う関係法律の整備等に関する法律
The text after this amendment, on e-Gov
31 March 2020
Act Partially Amending the Employment Insurance Act, etc.
雇用保険法等の一部を改正する法律
The text after this amendment, on e-Gov
25 May 2018
Act Partially Amending the Act on the Abolition, etc. of the Mutual Aid Association Act for Employees of Agricultural, Forestry and Fishery Organizations, etc. to Integrate the Employees' Pension Insurance System and the Mutual Aid Association System for Employees of Agricultural, Forestry and Fishery Organizations
厚生年金保険制度及び農林漁業団体職員共済組合制度の統合を図るための農林漁業団体職員共済組合法等を廃止する等の法律の一部を改正する法律
The text after this amendment, on e-Gov
2 June 2017
Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Civil Code
民法の一部を改正する法律の施行に伴う関係法律の整備等に関する法律
The text after this amendment, on e-Gov
1 April 2016
Act on the Arrangement, etc. of Acts Related to the Ministry of Health, Labour and Welfare to Promote the Reform of Incorporated Administrative Agencies
独立行政法人に係る改革を推進するための厚生労働省関係法律の整備等に関する法律
The text after this amendment, on e-Gov
1 April 2016
Act on the Arrangement of Related Acts upon the Enforcement of the Administrative Complaint Review Act
行政不服審査法の施行に伴う関係法律の整備等に関する法律
The text after this amendment, on e-Gov
1 April 2016
Act Partially Amending the Local Autonomy Act
地方自治法の一部を改正する法律
The text after this amendment, on e-Gov

Who it applies to

It applies to

A business that employs workers is a covered business (適用事業), apart from those listed below as excluded, and benefits are paid to its workers. When the insurance relationship (保険関係) with a business begins and ends, and the premiums, are governed by the Act on the Collection of Insurance Premiums of Labor Insurance (徴収法, Act No. 84 of 1969), a separate Act.(Art. 3(1), Art. 3(2), Art. 6(1), Art. 30(1)) (the provisions it rests on)
Workers employed in two or more businesses whose employers are not the same person (複数事業労働者), and people a Ministry of Health, Labour and Welfare Order treats alike: for injury, disability or death caused by the work of those jobs together, and for illness so caused if the Order lists it; their base daily amount is added up from all their employers.(Art. 1(1), Art. 7(1)(ii), Art. 20-3(1), Art. 8(3)) (the provisions it rests on)

2 more

Through special enrolment (特別加入), where the employer applies to enrol itself and the others together and the government approves: the employer — or, for a company or other body, its representative — of a business with no more workers than a Ministry of Health, Labour and Welfare Order sets, other than a kind of business the Order excludes, who entrusts its labor insurance affairs to a labor insurance affairs association (労働保険事務組合), together with the people other than workers who work in that business. They are treated as the business's workers, on a base daily amount the Minister of Health, Labour and Welfare sets.(Art. 33(1)(i), Art. 33(1)(ii), Art. 34(1)) (the provisions it rests on)
Also through special enrolment, once a group of them has the government's approval: people who usually run a kind of business a Ministry of Health, Labour and Welfare Order names without employing workers, those who work with them, and people doing a kind of work the Order names — though those the Order names by reference to their commute are covered for occupational and multiple-job accidents only, not commuting. And, once the body or employer has the government's approval, people sent abroad by a body doing technical cooperation to a developing region, or by an employer in Japan to work in a business outside Japan, but not to a country the Order excludes, nor by a body or employer whose business has a set end date; where the business abroad is not a small business of the kind the first route covers, only those sent as its workers.(Art. 33(1)(iii), Art. 33(1)(iv), Art. 33(1)(v), Art. 33(1)(vi), Art. 33(1)(vii), Art. 35(1), Art. 36(1)) (the provisions it rests on)

It does not apply to

Businesses the State runs directly, and businesses of government and public offices (官公署), other than those in the industries listed in Appended Table 1 of the Labor Standards Act.(Art. 3(2)) (the provisions it rests on)
Until the change takes effect, 16 July 2031 at the latest: For the time being, businesses a Cabinet Order (政令) names are not covered businesses, apart from those the Act covered before Act No. 83 of 1969 amended it and the others Article 12 of that Act's supplementary provisions (附則) lists; they are businesses that may join voluntarily (任意適用事業).(Suppl. Prov. Art. 12(1), Suppl. Prov. Art. 12(2)) (the provisions it rests on)

1 more

From a day still to be set, 16 July 2031 at the latest: On a day a Cabinet Order (政令) sets, no later than 16 July 2031, Act No. 60 of 2026 ends this temporary rule, and those businesses become covered businesses like any other business that employs workers.(Art. 3(1), Suppl. Prov. Art. 1(1)(ii), Suppl. Prov. Art. 10(1)) (the provisions it rests on)

Special rules and exceptions (9)

No benefit is paid where the worker intentionally caused the injury, illness, disability or death, or the accident that directly caused it. The government may withhold all or part of a benefit where the worker caused it, or made it worse or slowed recovery, by an intentional crime, gross negligence (重大な過失), or refusing without good reason to follow instructions on treatment.(Art. 12-2-2(1), Art. 12-2-2(2)) (the provisions it rests on)
Where a third party caused the accident, the government, once it has paid benefits, takes over the recipient's claim for damages against that party up to the value paid. Where the recipient has already received damages from that party for the same cause, the government may withhold benefits up to that value.(Art. 12-4(1), Art. 12-4(2)) (the provisions it rests on)
The loss-of-salary payment, for any kind of accident, is not paid while the worker is held in a penal institution, workhouse or similar place, or in a juvenile training school or similar facility, in the cases a Ministry of Health, Labour and Welfare Order sets.(Art. 14-2(1), Art. 20-4(2), Art. 22-2(2)) (the provisions it rests on)
A person who intentionally killed the worker cannot receive survivors' benefits, and a person who intentionally killed another survivor of equal or earlier rank, or someone who would have become one, loses the survivors' pension.(Art. 16-9(1), Art. 16-9(2), Art. 16-9(4)) (the provisions it rests on)
For a commuting accident, the government collects from a worker receiving medical treatment benefit, other than those a Ministry of Health, Labour and Welfare Order excludes, a co-payment (一部負担金) of an amount that Order sets, no more than 200 yen. Where the worker also receives the loss-of-salary payment, the first payment is reduced by that amount instead, and the co-payment may be deducted from benefits due.(Art. 31(2), Art. 31(3), Art. 22-2(3)) (the provisions it rests on)
For people covered by special enrolment, the government may withhold all or part of a benefit for an accident that happened while their special-enrolment premium was unpaid; for an employer and the people in its business, also where the employer caused the occupational accident intentionally or through gross negligence.(Art. 34(1)(iv), Art. 35(1)(vii), Art. 36(1)(iii)) (the provisions it rests on)
Where a worker injured or made ill at work is receiving the injury-and-illness compensation pension three years after treatment began, or starts receiving it later, then for the ban in Article 19(1) of the Labor Standards Act on dismissing a worker during leave for treatment of a work injury and for 30 days after, the employer is treated as having paid, from that day, the final lump-sum compensation (打切補償) under Article 81 of that Act. The ban therefore no longer protects that worker; the deeming applies to that ban only.(Art. 19(1), Labor Standards Act Art. 19(1), Labor Standards Act Art. 81(1)) (the provisions it rests on)
Until 31 March 2027: Under the supplementary provisions (附則) of Act No. 130 of 1965, and of later Acts for commuting and multiple-job accidents, a husband, parent, grandparent or sibling who depended on the worker's income and was 55 to 59 at the death can also receive the survivors' pension, after all other survivors in order; it is held back until the month they turn 60, though the advance lump sum (遺族補償年金前払一時金) that the supplementary provisions of this Act offer can still be paid meanwhile.(Suppl. Prov. Art. 43(1), Suppl. Prov. Art. 43(2), Suppl. Prov. Art. 43(3), Suppl. Prov. Art. 5(1), Suppl. Prov. Art. 7(1), Suppl. Prov. Art. 60(1), Suppl. Prov. Art. 60-4(1), Suppl. Prov. Art. 63(1), Suppl. Prov. Art. 5(2), Suppl. Prov. Art. 7(2)) (the provisions it rests on)
From 1 April 2027: Under the supplementary provisions (附則) of Act No. 130 of 1965, and of later Acts for commuting and multiple-job accidents, a parent, grandparent or sibling who depended on the worker's income and was 55 to 59 at the death can also receive the survivors' pension, after all other survivors in order; it is held back until the month they turn 60, though the advance lump sum (遺族補償年金前払一時金) that the supplementary provisions of this Act offer can still be paid meanwhile. A husband is no longer among them, since he qualifies as a spouse — except for a pension already payable before 1 April 2027, which keeps the earlier rules.(Suppl. Prov. Art. 43(1), Suppl. Prov. Art. 43(2), Suppl. Prov. Art. 43(3), Suppl. Prov. Art. 5(1), Suppl. Prov. Art. 7(1), Art. 16-2(1), Suppl. Prov. Art. 2(1), Suppl. Prov. Art. 60(1), Suppl. Prov. Art. 60-4(1), Suppl. Prov. Art. 63(1), Suppl. Prov. Art. 5(2), Suppl. Prov. Art. 7(2)) (the provisions it rests on)

How it is enforced (10)

The government runs the insurance and pays benefits on a claim (請求) by the worker, the survivor or whoever held the funeral — except the injury-and-illness pension, which it pays without one. A person entitled to benefits must make the notifications and submit the documents a Ministry of Health, Labour and Welfare Order requires; if they fail to without good reason, or ignore an order to report or to see a doctor the authorities name, payment can be held back for a time.(Art. 2(1), Art. 12-8(2), Art. 12-8(3), Art. 12-8(4), Art. 20-3(1), Art. 22(1), Art. 12-7(1), Art. 47(1), Art. 47-2(1), Art. 47-3(1)) (the provisions it rests on)
Where a person entitled to a benefit dies before it is paid, their spouse (including a de facto spouse), children, parents, grandchildren, grandparents or siblings who shared their livelihood at the death — for a survivors' pension, the other survivors who could receive it — may claim the unpaid benefit in their own name, in that order, even if the deceased had not claimed it. A claim by one of several people of equal rank counts for all of them.(Art. 11(1), Art. 11(2), Art. 11(3), Art. 11(4)) (the provisions it rests on)
Until 31 March 2027: The right to medical treatment, loss-of-salary, funeral, nursing care and follow-up examination benefits lapses by prescription (時効) two years after it could first be exercised, and the right to disability and survivors' benefits after five years. The same periods apply to the matching benefits for multiple-job and commuting accidents.(Art. 42(1)) (the provisions it rests on)
From 1 April 2027: From 1 April 2027 the two-year limit for medical treatment, loss-of-salary, funeral and nursing care benefits becomes five years where the benefit arises from a disease that a Cabinet Order (政令) names as one whose connection to work or commuting is not easy to judge; follow-up examination benefits stay at two years, and disability and survivors' benefits at five. For an accident caused by such a disease before that day, the earlier two-year limit still applies.(Art. 42(1), Art. 42(2), Suppl. Prov. Art. 1(1), Suppl. Prov. Art. 5(1)) (the provisions it rests on)
Until 31 March 2027: A person dissatisfied with a decision on benefits may request review (審査請求) by an Industrial Accident Compensation Insurance Examiner (), and, if dissatisfied with the examiner's decision, request re-examination (再審査請求) by the Labor Insurance Appeal Committee (労働保険審査会). A requester who has had no decision three months after asking for review may treat the request as dismissed. For stopping prescription from running, both requests count as a claim in court.(Art. 38(1), Art. 38(2), Art. 38(3)) (the provisions it rests on)
From 1 April 2027: From 1 April 2027, a person dissatisfied with a decision on benefits, or on carrying out those social reintegration projects that a Cabinet Order (政令) names, may request review (審査請求) by an Industrial Accident Compensation Insurance Examiner (労働者災害補償保険審査官), and then re-examination (再審査請求) by the Labor Insurance Appeal Committee (労働保険審査会); a review request about such a project's decision, or failure to act, made before that day follows the earlier rules. A requester who has had no decision three months after asking for review may treat the request as dismissed. For stopping prescription from running, both requests count as a claim in court.(Art. 38(1), Art. 38(2), Art. 38(3), Suppl. Prov. Art. 1(1), Suppl. Prov. Art. 4(1)) (the provisions it rests on)
A court action to set aside a decision on benefits can be brought only after the examiner has decided the request for review; Article 40 does not require the Labor Insurance Appeal Committee's decision first.(Art. 40(1), Art. 38(1)) (the provisions it rests on)
Where someone has received benefits by deception or other wrongful means, the government may collect all or part of their cost from that person, and where an employer's false report or certification led to the payment, it may order the employer to pay jointly with the recipient. The government may also collect all or part of a benefit's cost from an employer, up to the value of the employer's own accident compensation under the Labor Standards Act, where the accident happened while the employer, intentionally or through gross negligence, had not filed the notice that starts the insurance relationship; while it had not paid its premium past the deadline in a payment demand; or where the employer caused the occupational accident intentionally or through gross negligence.(Art. 12-3(1), Art. 12-3(2), Art. 31(1)) (the provisions it rests on)
The authorities may order employers, labor insurance affairs associations (労働保険事務組合), special-enrolment groups and businesses that receive dispatched workers to report, submit documents or appear; order workers and claimants to report or submit documents, and claimants to be examined by a doctor they name; order a third party who caused the accident to report; and order doctors who treated a claimant to report or show their records. Their officials may enter workplaces and those bodies' offices to question people and inspect books and documents, carrying identification; the power is not one of criminal investigation.(Art. 46(1), Art. 47(1), Art. 47-2(1), Art. 48(1), Art. 48(2), Art. 48(3), Art. 49(1)) (the provisions it rests on)
Penalties are in Chapter VII (Articles 51 to 54). Where an employer or a business receiving dispatched workers disobeys an order to report or submit documents, reports falsely, or refuses to answer or obstructs an inspection, the penalty is imprisonment (拘禁刑) for up to six months or a fine of up to 300,000 yen, and the same applies to whoever does so for a labor insurance affairs association or special-enrolment group; for anyone else doing the same, such as a worker, claimant or doctor — but not the third party who caused the accident — it is up to six months or a fine of up to 200,000 yen. Where the act is done in the business of a company or other employer, that company or employer is fined as well.(Art. 51(1), Art. 53(1), Art. 54(1)) (the provisions it rests on)

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e-Gov (Digital Agency)労働者災害補償保険法 — the text in force from 2026-07-17Original
e-Gov (Digital Agency)労働者災害補償保険法 — revision historyOriginal
Japanese Law Translation, Ministry of JusticeIndustrial Accident Compensation Insurance Act — Ministry of Justice translationOriginal
Machine translation, not official
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