Introduction: Accidents at work have been studied from many perspectives, but it is not known whether there is an association with the age of the worker (his experience). Objective: To determine the relationship between seniority and the type of occupational accident in eight cities of Peru. Material and methods: Cross-sectional analytical study of secondary data, the report of 58472 occupational accidents from eight hospitals of the Peruvian social security (EsSalud) was used. The type of occupational accident was related to seniority and general characteristics.Association statistics were obtained. Results: Compared to those that were less than one year old, there was a difference according to the level drop and being 11-20 years old (p = 0.003); falling tall and having 6-10 years (p = 0.004), 11-20 years (p <0.001) and being over 20 years (p <0.001); having suffered blows to the head and being one year old (p <0.001) or more than 20 years (p <0.001); having hit in the chest and being 2-5 years (p = 0.036) or more than 20 years (p = 0.036); the one who has had wounds and all seniority groups (p <0.011 in all cases); having had a bruise and four of the seniority periods (p <0.002 in all cases), in addition, having fractured and having more than 20 years at work (p <0.001). Conclusion: If there was a relationship between seniority according to the type of work accident, in addition, there were also characteristics according to the sex and age of the worker.