Overhead high-voltage power lines are visible and supported by high poles and pylons, at heights that allow people to walk under them without snagging them as they pass. The corridors of overhead high-voltage power lines are occupied illegally, with serious consequences for people’s health and safety. Knowing the reasons for the occupation of the high-voltage overhead power line corridors in Daloa is the focus of this study, the aim of which is to identify the health and safety risks for people occupying the corridors of high-voltage overhead power lines. The methodology adopted is based on documentary research and field surveys. A questionnaire was drawn up for 408 occupants of the high-voltage power line corridor, and interviews were successively conducted with the head of the Ivorian electricity company (C.I.E.) and the head of the technical department of the mayor of the town of Daloa. This approach shows that the occupation of the power line corridor in the town of Daloa is due to a number of regulatory, institutional, economic and social factors. The regulatory and institutional factors concern the land administration and the local authority, while the economic factors are linked to the high cost of shops, the high cost of land, the need to remain in the information society and the lack of information on the subject.