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

Table 2

Accidents by day of the week and personal 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
Sex; value < 0.001	Men	526,878	447,124	426,708	389,889	360,226	2,150,825	100%	84.9%	81.0%	74.0%	68.4%
	Women	166,343	147,194	144,219	136,125	129,166	723,047	100%	88.5%	86.7%	81.8%	77.7%
Age; value < 0.001	Less 30	105,192	91,553	88,606	80,445	72,864	438,660	100%	87.0%	84.2%	76.5%	69.3%
	30-39	208,942	179,787	171,197	156,964	143,001	859,891	100%	86.0%	81.9%	75.1%	68.4%
	40-49	208,361	177,315	169,967	156,965	147,022	859,630	100%	85.1%	81.6%	75.3%	70.6%
	50-59	143,500	122,545	118,494	110,387	105,519	600,445	100%	85.4%	82.6%	76.9%	73.5%
	More 60	27,226	23,118	22,663	21,253	20,986	115,246	100%	84.9%	83.2%	78.1%	77.1%
Nationality; value < 0.001	NoUE	44,724	38,873	37,936	35,837	34,517	191,887	100%	86.9%	84.8%	80.1%	77.2%
	UE	23,973	20,981	20,411	18,649	18,081	102,095	100%	87.5%	85.1%	77.8%	75.4%
	Spain	624,524	534,464	512,580	471,528	436,794	2,579,890	100%	85.6%	82.1%	75.5%	69.9%
Seniority; value < 0.001	Less 1 year	240,224	210,462	204,071	189,312	176,586	1,020,655	100%	87.6%	85.0%	78.8%	73.5%
	1 to 3 years	104,033	89,275	85,618	78,071	73,080	430,077	100%	85.8%	82.3%	75.0%	70.2%
	3 to 6 years	93,688	79,601	75,590	69,664	64,566	383,109	100%	85.0%	80.7%	74.4%	68.9%
	More 6 years	255,276	214,980	205,648	188,967	175,160	1,040,031	100%	84.2%	80.6%	74.0%	68.6%
Total		693,221	594,318	570,927	526,014	489,392	2,873,872	100%	85.7%	82.4%	75.9%	70.6%

Statistically not significant difference, in number of accidents, with the previous day (between Thursday and Friday).