L code	Large causal agent	M code	Medium causal agent	S code	Small causal agent	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	total	Small causal agent	S code
1	machine	11	engine	111	engine			61		44		43	36	47	44	35	32	27	51	31	24	33	32	38	38	31	19	40	706	engine	111
		12	power transmission mechanism	121	power transmission mechanism			552		473		511	456	440	445	379	401	377	374	367	338	392	319	363	351	301	293	313	7,445	power transmission mechanism	121
		13	woodworking machine	131	circular sawing machine			2,370		2,172		1,776	1,641	1,555	1,419	1,199	1,182	1,153	1,094	1,065	1,028	870	839	777	774	805	721	721	23,161	circular sawing machine	131
				132	band sawing machine			235		189		163	118	141	113	104	78	96	79	81	78	69	61	58	59	41	60	49	1,872	band sawing machine	132
				133	wood planer machine			575		462		360	324	276	325	238	229	219	178	184	163	138	143	128	138	121	131	121	4,453	wood planer machine	133
				134	hollow chisel mortiser, wood borer			131		86		66	53	66	53	43	37	33	35	42	31	36	30	26	33	18	25	14	858	hollow chisel mortiser, wood borer	134
				135	chamfering machine, router, woodworking milling machine			110		96		68	62	66	60	45	34	42	34	36	39	32	31	25	43	25	23	31	902	chamfering machine, router, woodworking milling machine	135
				136	chain saw			646		721		639	604	698	651	689	690	631	571	502	541	503	449	431	407	427	461	467	10,728	chain saw	136
				139	other woodworking machines			1,023		878		763	680	713	634	519	518	551	524	483	475	411	436	390	374	387	349	372	10,480	other woodworking machines	139
		14	construction machine	141	leveling, transporting or loading machine			407		381		346	347	306	295	260	293	268	287	279	235	272	251	270	277	234	237	278	5,523	leveling, transporting or loading machine	141
				142	excavating machine			1,108		913		942	823	752	752	663	645	671	696	681	690	573	567	586	593	653	672	650	13,630	excavating machine	142
				143	foundation work machine			107		80		86	87	69	63	54	53	56	64	62	62	70	61	57	64	51	61	44	1,251	foundation work machine	143
				144	hardening machine			175		137		96	111	100	99	88	99	74	78	64	83	84	79	57	52	66	52	58	1,652	hardening machine	144
				145	demolition machine			131		126		131	125	119	120	112	98	104	105	171	186	192	193	181	164	171	162	186	2,777	demolition machine	145
				146	vehicle for high lift work			91		95		98	114	112	119	105	92	90	88	81	89	102	105	95	78	119	100	102	1,875	vehicle for high lift work	146
				149	other construction machines			460		388		421	364	330	337	313	292	327	331	322	297	212	227	180	198	168	173	195	5,535	other construction machines	149
		15	metal manufacturing machine	151	lathe			527		424		395	433	363	385	287	298	306	338	267	241	284	244	210	249	227	222	233	5,933	lathe	151
				152	drill press, milling machine			680		572		558	536	510	494	319	327	323	298	300	299	314	286	232	250	229	220	218	6,965	drill press, milling machine	152
				153	grinding machine, buffing machine			849		797		755	726	816	749	599	633	689	620	561	603	565	569	549	562	560	521	554	12,277	grinding machine, buffing machine	153
				154	power press			1,119		1,116		1,030	973	904	785	527	559	649	651	586	602	565	517	559	524	503	452	451	13,072	power press	154
				155	forging pressure hammer			30		17		25	21	19	26	16	18	12	12	12	11	12	12	14	10	15	11	9	302	forging pressure hammer	155
				156	shearing machine			194		213		176	156	189	160	144	141	120	141	102	132	105	125	95	101	95	91	93	2,573	shearing machine	156
				159	other metal manufacturing machines			1,716		1,480		1,353	1,415	1,341	1,191	821	921	981	956	931	931	796	779	844	831	817	725	788	19,617	other metal manufacturing machines	159
		16	general machine	161	centrifugal machine			21		21		16	24	18	25	13	12	16	13	18	16	15	13	11	17	18	12	14	313	centrifugal machine	161
				162	mixer, grinder			389		356		313	324	331	300	262	243	248	284	282	256	250	201	221	224	243	238	225	5,190	mixer, grinder	162
				163	roll machine (except printingroll machine)			646		602		566	532	529	509	446	479	416	439	440	424	385	348	417	365	358	354	321	8,576	roll machine (except printingroll machine)	163
				164	injection molding machine			194		204		174	146	162	108	119	121	90	104	97	73	73	69	75	95	76	71	84	2,135	injection molding machine	164
				165	food manufacturing machine			2,476		2,347		2,267	2,004	2,001	2,152	1,967	1,992	1,992	1,902	1,852	1,723	1,784	1,778	1,744	1,588	1,658	1,548	1,503	36,278	food manufacturing machine	165
				166	printing machine			521		470		424	410	390	377	326	304	295	290	263	249	211	224	216	191	176	180	206	5,723	printing machine	166
				167	industrial robot			26		47		36	36	51	34	29	26	30	31	30	29	26	24	26	26	22	24	29	582	industrial robot	167
				169	other general power machines			5,335		5,064		4,430	4,507	4,309	4,126	3,626	3,571	3,576	3,371	3,282	3,158	3,184	3,083	3,071	3,176	3,206	2,954	3,020	70,049	other general power machines	169
		17	mobile silviculture machine	171	felling machine																	48	56	39	37	45	65	40	330	felling machine	171
				172	mobile logging machine																	27	20	19	24	21	18	15	144	mobile logging machine	172
				173	skyline yarding machine																	12	15	7	11	15	11	16	87	skyline yarding machine	173
				179	other mobile silviculture machine																	4	5	3	5	6	12	12	47	other mobile silviculture machine	179
2	crane, conveying machine	21	crane	211	crane			1,357		1,269		1,252	1,216	1,185	1,175	840	844	871	875	789	840	742	772	785	828	850	725	780	17,995	crane	211
				212	mobile crane			969		912		870	766	736	768	648	619	588	566	660	630	615	597	564	603	589	570	566	12,836	mobile crane	212
				213	derrick crane			5		3		2	4	4	4	1	5	3	2		2					1			36	derrick crane	213
				214	elevator, lift			321		280		228	268	271	218	214	174	168	189	180	193	184	145	155	176	197	159	171	3,891	elevator, lift	214
				215	cargo lifting appliance			20		12		14	10	14	6	5	10	16	5	12	11	5	13	14	12	16	11	15	221	cargo lifting appliance	215
				216	gondola			15		10		14	13	8	21	11	12	13	5	11	7	4	5	10	7	8	5	11	190	gondola	216
				217	lumberyard equipment, logging cableway			63		45		50	42	35	44	34	39	24	34	21	27	19	21	11	12	9	11	16	557	lumberyard equipment, logging cableway	217
				218	simple skyline yarding equipment																	3	1		1		3	4	12	simple skyline yarding equipment	218
				219	other powered crane			246		229		234	226	166	169	145	158	156	146	155	145	136	118	108	143	132	130	116	3,058	other powered crane	219
		22	conveying machine	221	truck			11,480		10,876		10,304	10,228	9,923	9,445	8,253	8,548	8,547	8,677	8,995	8,817	8,664	8,502	8,797	8,870	8,760	8,890	9,011	175,587	truck	221
				222	forklift			2,621		2,613		2,607	2,570	2,534	2,404	1,954	1,916	2,054	1,982	1,904	1,898	1,890	1,977	1,997	2,113	2,145	1,989	2,028	41,196	forklift	222
				223	railway equipment			33		28		29	36	29	37	24	15	24	26	28	25	26	13	16	19	31	18	17	474	railway equipment	223
				224	conveyor			1,554		1,504		1,376	1,390	1,400	1,339	1,071	1,153	1,092	1,104	1,127	1,131	998	981	1,019	988	967	941	976	22,111	conveyor	224
				225	loader			66		66		52	61	43	50	38	36	48	48	37	50	48	47	47	40	57	47	54	935	loader	225
		21	crane	226	straddle carrier					5		1	6	2	5	1	2	3	5	2	7	4	5	5	4	2	4	5	68	straddle carrier	226
		22	conveying machine	227	rough terrain hauler			48		41		33	31	19	37	43	20	23	17	22	25	28	18	34	25	30	23	24	541	rough terrain hauler	227
				229	other powered conveying machines			665		647		623	623	587	543	444	527	521	498	465	478	408	409	464	460	430	376	395	9,563	other powered conveying machines	229
		23	vehicle	231	cars, bus, motorcycle			7,633		7,718		9,931	10,039	9,761	9,414	8,828	8,854	8,431	8,516	8,509	8,496	8,281	8,279	8,179	8,396	7,913	7,311	7,634	162,123	cars, bus, motorcycle	231
				232	railway vehicle			72		64		92	83	65	73	75	64	71	64	91	65	50	67	74	65	81	65	79	1,360	railway vehicle	232
				239	other vehicles			793		770		801	758	861	702	660	636	644	713	565	560	539	489	513	488	493	395	441	11,821	other vehicles	239
3	other equipment	31	pressure vessel	311	boiler			28		19		32	27	36	17	23	23	14	18	19	22	7	13	14	16	17	10	10	365	boiler	311
				312	pressure vessel			65		52		42	39	35	39	36	24	29	41	26	18	29	31	38	22	29	23	23	641	pressure vessel	312
				319	other pressure vessels			117		105		76	63	76	82	71	54	61	75	59	63	47	65	49	55	38	41	57	1,254	other pressure vessels	319
		32	chemical facilities	321	chemical facilities			27		44		57	45	40	40	26	25	33	33	17	38	29	32	24	43	30	21	47	651	chemical facilities	321
		33	welding equipment	331	gas welding equipment			96		83		97	57	84	70	85	64	66	57	53	53	54	50	56	82	65	40	35	1,247	gas welding equipment	331
				332	arc welding equipment			107		87		102	97	120	102	96	65	69	64	84	79	69	87	63	73	64	69	66	1,563	arc welding equipment	332
				339	other welding equipment			140		112		106	107	97	115	54	55	48	76	77	86	70	70	68	59	67	59	74	1,540	other welding equipment	339
		34	kiln, caldron	341	kiln, caldron			205		203		181	182	174	185	173	194	144	151	174	146	145	119	169	170	215	172	179	3,281	kiln, caldron	341
				342	industrial dryer			29		20		30	24	21	25	29	21	26	23	25	27	16	16	29	16	28	25	22	452	industrial dryer	342
				349	other kiln, caldron			30		37		12	31	24	24	25	16	18	19	20	30	35	30	23	22	21	17	20	454	other kiln, caldron	349
		35	electric equipment	351	transmission			117		96		116	101	136	142	115	88	101	140	112	123	140	139	163	185	173	138	191	2,516	transmission	351
				352	electric power facilities			73		64		65	50	72	66	51	72	50	56	49	60	47	45	42	59	38	45	52	1,056	electric power facilities	352
				359	other electrical equipment			138		108		106	96	85	105	72	86	99	65	91	89	76	92	88	91	90	116	114	1,807	other electrical equipment	359
		36	human power machine, tools	361	human power cranes			113		115		100	94	97	95	57	66	82	60	65	72	56	62	64	84	406	573	907	3,168	human power cranes	361
				362	human power hauling equipment			2,616		2,770		3,102	3,296	3,420	3,635	3,281	3,464	3,532	3,714	3,654	3,796	3,821	4,249	4,281	4,593	4,493	4,528	4,332	70,577	human power hauling equipment	362
				363	human power machine			189		124		126	130	124	114	85	106	96	100	113	110	101	85	100	85	94	94	99	2,075	human power machine	363
				364	hand tool			4,784		4,451		4,138	4,052	4,077	3,730	3,324	3,333	3,201	3,492	3,406	3,245	3,145	2,972	2,987	3,122	3,068	3,121	3,238	66,886	hand tool	364
		37	tools	371	ladder			5,867		5,651		5,610	5,653	5,613	5,464	5,041	5,061	5,199	5,309	5,269	5,250	5,034	5,086	5,178	5,410	5,571	5,621	5,663	102,550	ladder	371
				372	slinging tool			815		743		758	706	704	647	518	516	482	483	497	448	449	468	444	417	418	369	394	10,276	slinging tool	372
				379	other tools			4,022		4,131		4,233	4,572	4,534	4,848	3,873	3,945	4,220	4,080	4,303	4,371	4,481	4,733	5,066	5,109	5,568	5,180	5,553	86,822	other tools	379
		39	other equipments, facilities	391	other equipments, facilities			2,715		2,433		2,923	2,961	3,086	3,150	2,827	3,123	2,931	3,101	3,143	3,266	3,190	3,338	3,103	3,348	3,368	3,476	3,808	59,290	other equipments, facilities	391
4	temporary buildings, establishments	41	temporary buildings, establishments	411	scaffolding			2,296		2,035		1,905	1,881	1,838	1,580	1,182	1,053	1,224	1,234	1,318	1,332	1,154	1,093	1,030	1,023	1,116	920	908	26,122	scaffolding	411
				412	timbering			224		148		132	169	164	116	88	86	87	83	86	72	83	65	52	67	50	49	75	1,896	timbering	412
				413	stairs, landing stage			4,760		5,048		5,151	5,575	5,476	5,467	5,088	4,992	5,133	5,118	4,986	5,337	5,320	5,618	5,786	5,950	6,270	6,343	6,597	104,015	stairs, landing stage	413
				414	opening			578		493		476	505	494	449	457	395	387	433	429	420	413	456	420	494	502	484	466	8,751	opening	414
				415	roof, beam, haze, crossbeam, principal rafter			2,135		1,859		1,851	1,657	1,360	1,317	1,103	1,187	1,337	1,360	1,246	1,170	1,069	1,030	962	1,080	946	836	814	24,319	roof, beam, haze, crossbeam, principal rafter	415
				416	working platform, boot board			3,846		4,033		3,462	3,793	3,803	3,979	3,481	3,627	3,440	3,434	3,396	3,714	3,693	3,578	3,780	4,035	3,775	3,515	3,400	69,784	working platform, boot board	416
				417	passage			9,055		9,058		10,174	10,336	9,946	10,636	9,794	10,378	11,112	11,340	11,043	11,746	11,404	13,046	13,283	15,395	14,401	15,042	16,969	224,158	passage	417
				418	building, establishment			4,631		4,258		4,172	4,498	4,348	4,267	3,931	4,020	4,244	4,047	4,061	3,713	3,862	3,746	4,058	4,196	3,739	3,895	3,973	77,659	building, establishment	418
				419	other temporary buildings, establishments			2,599		2,791		2,777	2,813	2,544	2,522	2,376	2,538	2,393	2,584	2,434	2,781	2,887	2,976	2,734	2,883	3,269	3,359	3,105	52,365	other temporary buildings, establishments	419
5	substance, material	51	hazards, harmful substances	511	explosive substance			47		48		44	29	27	22	19	21	15	17	31	18	17	16	14	14	14	11	18	442	explosive substance	511
				512	inflammable substance			218		190		166	197	199	163	127	152	111	147	124	153	112	101	112	106	164	98	110	2,750	inflammable substance	512
				513	inflammable gas			116		108		88	93	94	106	59	63	95	85	61	79	49	80	59	70	59	55	37	1,456	inflammable gas	513
				514	harmful substance			330		307		341	380	320	272	214	264	294	255	258	230	278	250	238	259	213	192	176	5,071	harmful substance	514
				515	radiation			1		2			1		3	1			1		1	1	1	5				2	19	radiation	515
				519	other hazards, harmful substances			534		520		524	472	467	419	411	350	452	416	432	445	415	470	475	411	481	456	452	8,602	other hazards, harmful substances	519
		52	materials	521	metal material			6,771		5,751		5,534	5,629	5,427	4,893	3,850	3,822	3,749	3,901	3,663	3,809	3,509	3,463	3,595	3,548	3,394	3,070	3,131	80,509	metal material	521
				522	lumber, bamboo			2,444		2,066		1,947	1,822	1,734	1,427	1,289	1,266	1,270	1,254	1,277	1,198	1,095	1,111	1,070	1,067	1,028	1,007	969	26,341	lumber, bamboo	522
				523	stone, sand, substance			917		721		642	580	543	492	396	401	408	408	400	448	321	326	336	334	347	323	312	8,655	stone, sand, substance	523
				529	other materials			2,286		2,127		1,977	2,211	2,134	1,890	1,710	1,741	1,761	1,832	1,798	1,760	1,676	1,501	1,486	1,451	1,504	1,435	1,458	33,738	other materials	529
6	load	61	load	611	load			7,791		7,077		6,837	7,227	7,576	7,146	6,106	6,009	6,009	6,080	5,917	5,950	5,997	6,103	6,134	6,487	6,581	6,841	6,995	124,863	load	611
				612	machine/equipment as load			862		713		706	713	710	683	586	590	528	589	543	458	459	451	396	423	461	431	397	10,699	machine/equipment as load	612
7	environment	71	natural environment	711	natural ground, rock			1,527		1,424		1,151	1,153	1,071	1,095	966	956	963	964	917	833	873	751	797	745	786	773	777	18,522	natural ground, rock	711
				712	standing tree			1,506		1,373		1,250	1,163	1,277	1,213	1,374	1,371	1,332	1,141	1,106	1,053	1,086	1,005	965	980	899	953	882	21,929	standing tree	712
				713	water			155		178		183	204	170	182	163	126	1,450	155	184	188	130	148	135	204	160	206	140	4,461	water	713
				714	abnormal environment			46		40		41	41	44	45	27	44	59	83	65	26	35	51	55	65	31	32	28	858	abnormal environment	714
				715	high/cold temperature environment			652		391		382	516	480	485	300	834	662	709	819	748	656	666	733	1,483	1,087	1,194	847	13,644	high/cold temperature environment	715
				719	other environments			2,851		2,368		2,848	2,605	2,174	2,515	2,351	2,608	3,021	3,294	3,407	3,944	2,924	3,321	3,484	3,968	2,987	3,230	3,758	57,658	other environments	719
9	others	91	other causal agent	911	other causal agent			3,019		2,891		3,115	3,431	3,206	3,367	2,797	2,859	3,365	3,088	3,168	3,141	3,386	3,190	3,603	3,374	3,672	9,486	22,953	87,111	other causal agent	911
		92	no causal agent	921	no causal agent			4,210		4,855		5,155	5,163	5,291	5,589	5,959	6,155	6,093	6,428	6,291	6,478	6,749	6,613	7,514	8,635	8,939	10,065	11,276	127,458	no causal agent	921
		99	unclassifiable	999	unclassifiable			583		552		467	500	540	587	449	374	368	428	394	385	324	252	294	342	256	176	194	7,465	unclassifiable	999
0					total			140,149		132,936		133,050	134,298	131,478	129,026	114,152	116,733	119,622	119,576	118,157	119,535	116,311	117,910	120,460	127,329	125,611	131,156	149,918	2,397,407	total	0

Industrial accidents mean fatal and non-fatal occupational injuries and diseases with work absence of 4 days and more. Data of 2011 year include Industrial accidents caused by Great East Japan Earthquake in 2011.

Data sources:

https://anzeninfo.mhlw.go.jp/user/anzen/tok/anst00.htm