The “Weekday Effect”: A Decrease in Occupational Accidents from Monday to Friday—An Extension of the “Monday Effect”

Table 3

Accidents by day of the week and company variables. Full-time workers (Spain), 2011-2018.

		Number of accidents						Percentage compared to Monday
		Mon	Tue	Wed	Thu	Fri	Total	Mon	Tue	Wed	Thu	Fri
NACE code activity; value < 0.001	Agriculture, forestry and fishing	42,227	36,500	35,285	33,148	32,075	179,235	100%	86.4%	83.6%	78.5%	76.0%
	Mining and quarrying	4,739	4,043	3,734	3,488	2,854	18,858	100%	85.3%	78.8%	73.6%	60.2%
	Manufacturing	142,576	124,260	118,195	106,939	92,510	584,480	100%	87.2%	82.9%	75.0%	64.9%
	Electricity, gas, steam, and air-conditioning supply	629	551	511	436	449	2,576	100%	87.6%	81.2%	69.3%	71.4%
	Water supply: sewerage, waste management, and remediation activ.	13,588	11,638	11,118	10,045	9,254	55,643	100%	85.6%	81.8%	73.9%	68.1%
	Construction	104,139	84,765	80,185	71,275	65,362	405,726	100%	81.4%	77.0%	68.4%	62.8%
	Wholesale and retail trade: repair of motor vehicles and motorcycles	96,998	81,076	77,450	72,608	69,314	397,446	100%	83.6%	79.8%	74.9%	71.5%
	Transportation and storage	48,834	41,603	39,678	36,743	35,126	201,984	100%	85.2%	81.3%	75.2%	71.9%
	Accommodation and food service activities	34,058	32,258	33,171	33,095	36,096	168,678	100%	94.7%	97.4%	97.2%	106.0%
	Information and communication	4,199	3,518	3,403	3,089	2,658	16,867	100%	83.8%	81.0%	73.6%	63.3%
	Financial and insurance activities	1,660	1,472	1,478	1,417	1,148	7,175	100%	88.7%	89.0%	85.4%	69.2%
	Real-estate activities	1,266	1,040	1,046	1,032	966	5,350	100%	82.1%	82.6%	81.5%	76.3%
	Professional, scientific and technical activities	8,277	7,031	6,825	6,192	5,269	33,594	100%	84.9%	82.5%	74.8%	63.7%
	Administrative and support-service activities	60,043	52,263	49,790	45,707	40,888	248,691	100%	87.0%	82.9%	76.1%	68.1%
	Public administration and defence; compulsory social security	54,752	46,224	44,401	40,601	38,345	224,323	100%	84.4%	81.1%	74.2%	70.0%
	Education	9,263	7,996	7,608	7,049	6,528	38,444	100%	86.3%	82.1%	76.1%	70.5%
	Health and social work activities	48,980	43,414	42,354	39,583	37,249	211,580	100%	88.6%	86.5%	80.8%	76.0%
	Arts, entertainment, and recreation	6,788	6,107	6,415	5,870	5,661	30,841	100%	90.0%	94.5%	86.5%	83.4%
	Other service activities	7,978	6,650	6,421	5,957	5,838	32,844	100%	83.4%	80.5%	74.7%	73.2
	Activities of households as employers	2,205	1,888	1,846	1,718	1,786	9,443	100%	85.6%	83.7%	77.9%	81.0%
	Activities of extraterritorial organisations and bodies	22	21	13	22	16	94	100%	95.5%	59.1%	100.0%	72.7%
Company size; value < 0.001	Micro enterprises (4-)	71,702	61,436	58,634	54,677	53,843	300,292	100%	85.7%	81.8%	76.3%	75.1%
	Micro enterprises (5-9)	67,609	57,565	54,797	50,494	48,621	279,086	100%	85.1%	81.0%	74.7%	71.9%
	Small enterprises (10-19)	87,009	73,574	70,424	64,607	61,963	357,577	100%	84.6%	80.9%	74.3%	71.2%
	Small enterprises (20-49)	126,528	106,930	103,197	94,147	86,716	517,518	100%	84.5%	81.6%	74.4%	68.5%
	Medium-sized enterprises (50-249)	179,103	153,913	147,987	135,799	122,857	739,659	100%	85.9%	82.6%	75.8%	68.6%
	Large enterprises (250+)	161,247	140,877	135,866	126,278	115,382	679,650	100%	87.4%	84.3%	78.3%	71.6%
Region; value < 0.001	Andalucia	110,191	93,869	90,016	82,940	79,133	456,149	100%	85.2%	81.7%	75.3%	71.8%
	Aragón	19,434	17,244	16,231	15,006	13,832	81,747	100%	88.7%	83.5%	77.2%	71.2%
	Asturias	16,072	14,133	13,473	12,309	11,318	67,305	100%	87.9%	83.8%	76.6%	70.4%
	Baleares	23,633	20,462	19,936	18,846	18,243	101,120	100%	86.6%	84.4%	79.7%	77.2%
	Canarias	30,935	26,158	26,533	23,790	22,926	130,342	100%	84.6%	85.8%	76.9%	74.1%
	Cantabria	7,141	6,336	6,170	5,560	5,261	30,468	100%	88.7%	86.4%	77.9%	73.7%
	Castilla la Mancha	32,322	26,631	25,161	22,714	21,363	128,191	100%	82.4%	77.8%	70.3%	66.1%
	Castilla y León	32,916	28,542	26,986	24,810	23,190	136,444	100%	86.7%	82.0%	75.4%	70.5%
	Cataluña	125,025	110,272	106,289	98,874	88,975	529,435	100%	88.2%	85.0%	79.1%	71.2%
	Ciudad Autónoma	1,506	1,319	1,274	1,178	1,054	6,331	100%	87.6%	84.6%	78.2%	70.0%
	Comunidad Valenciana	59,012	50,712	47,922	45,223	43,049	245,918	100%	85.9%	81.2%	76.6%	72.9%
	Extremadura	13,954	11,669	11,218	10,089	9,760	56,690	100%	83.6%	80.4%	72.3%	69.9%
	Galicia	39,213	33,701	32,541	29,766	28,723	163,944	100%	85.9%	83.0%	75.9%	73.2%
	La Rioja	5,104	4,427	4,122	3,793	3,396	20,842	100%	86.7%	80.8%	74.3%	66.5%
	Madrid	101,144	84,646	81,488	74,984	68,381	410,643	100%	83.7%	80.6%	74.1%	67.6%
	Murcia	22,672	18,789	18,130	16,880	16,096	92,567	100%	82.9%	80.0%	74.5%	71.0%
	Navarra	11,182	9,889	9,525	8,527	7,778	46,901	100%	88.4%	85.2%	76.3%	69.6%
	Pais Vasco	41,765	35,519	33,912	30,725	26,914	168,835	100%	85.0%	81.2%	73.6%	64.4%

Statistically not significant difference, in number (percentage) of accidents, with the previous day.