Objective. Study the variation in the number of accidents across days of the workweek, from Monday to Friday. Data and Method. All occupational accidents of full-time workers in Spain from 2011 to 2018 are analyzed. A total amount of 2,873,872 accidents are representative and not heavily affected by underreporting bias. Chi-squared test () and -value determine statistically significant differences in accident percentages from Monday to Friday, controlling personal (sex, age, nationality, and seniority), company (activity, size, and region), temporal (hour of the day and working hour) variables, and consequences (severity, injury type, and injured body part). Results. “Weekday effect” with a decrease in accidents of 29.4% from Monday to Friday, a decrease of 14.3% from Monday to Tuesday (“Monday effect”), 3.9% from Tuesday to Wednesday, 7.9% from Wednesday to Thursday, and 7% from Thursday to Friday. The “weekday effect” and the “Monday effect” occur across industries, for all company sizes, for all types of workers (both genders, different ages and seniority), for different types of injury, and across the day and the shift. “Monday effect” increases with age and seniority, for men, in small companies (10 to 49 workers), in the morning, at the beginning of the work shift hours, and for back injuries. “Weekday effect” decreases with age and increases with seniority, for men, in companies between 20 and 249 workers, in the morning and at the beginning of the work shift hours, and for back injuries.

中文翻译：

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“工作日效应”：周一至周五工伤事故减少——“周一效应”的延伸

客观的。研究周一至周五工作周中事故数量的变化。数据和方法。对2011年至2018年西班牙全职工人的所有职业事故进行了分析。总共 2,873,872 起事故具有代表性，并没有受到漏报偏差的严重影响。卡方检验 ( )和-值确定周一至周五事故百分比的统计显着性差异，控制个人（性别、年龄、国籍和资历）、公司（活动、规模和地区）、时间（一天中的小时）和工作时间）变量和后果（严重程度、受伤类型和受伤的身体部位）。结果。“平日效应”，周一至周五事故减少 29.4%，周一至周二减少 14.3%（“周一效应”），周二至周三减少 3.9%，周三至周四减少 7.9%，周三至周四减少 7%从周四到周五。“工作日效应”和“周一效应”发生在各个行业、所有公司规模、所有类型的工人（性别、不同年龄和资历）、不同类型的伤害以及全天和轮班中。“周一效应”随着年龄和资历的增加而增加，对于男性、小公司（10 至 49 名工人）、早上、轮班开始时以及背部受伤的人来说。对于男性、在 20 至 249 名员工的公司中、在早上和轮班开始时以及背部受伤时，“工作日效应”随着年龄的增长而减弱，随着资历的增加而增强。