Method for monitoring an installation of process automation, wherein a plurality of measuring points (MS1, MS2, MS3) is provided in the installation, wherein a measuring point consists of one or more components, comprising: - Detection of movements of persons (P1, P2, P3) located in the system by means of an evaluation of video images, which are recorded by means of at least one video camera arranged in the system; - Calculation of stay data, including times of stay and/or the respective duration of stay, of the respective persons (P1, P2, P3) at the individual measuring points (MS1, MS2, MS3) on the basis of the recorded movements; - Grouping of the persons (P1, P2, P3) on the basis of identification features, the persons (P1, P2, P3) being grouped on the basis of the authority and/or the role, the authority and/or the role being defined in an identification feature which is attached to the respective person (P1, P2, P3), an assignable color of an item of clothing being provided as an identification feature for the respective authority and/or role; - Linking the stay data with at least one data record from weather data, production data; - Evaluation of the stay data with regard to at least one of the following anomalies: a) Accumulated duration of stay of persons (P1, P2, P3) of a specific group of persons at at least one specific measuring point (MS1, MS2, MS3); and/or b) Accumulated number of times of persons (P1, P2, P3) of a certain group of persons at at least one certain measuring point (MS1, MS2, MS3), as well as determination of a certain measuring point of the system as being more maintenance-intensive and/or accumulation of the maintenance requirement of a component of the system and use of the link; and - Output of the result to an operator. - Detection of movements of persons (P1, P2, P3) located in the system by means of an evaluation of video images, which are recorded by means of at least one video camera arranged in the system; - Calculation of stay data, including times of stay and/or the respective duration of stay, of the respective persons (P1, P2, P3) at the individual measuring points (MS1, MS2, MS3) on the basis of the recorded movements; - Grouping of the persons (P1, P2, P3) on the basis of identification features, the persons (P1, P2, P3) being grouped on the basis of the authority and/or the role, the authority and/or the role being defined in an identification feature which is attached to the respective person (P1, P2, P3), an assignable color of an item of clothing being provided as an identification feature for the respective authority and/or role; - Linking the stay data with at least one data record from weather data, production data; - Evaluation of the stay data with regard to at least one of the following anomalies: a) Accumulated duration of stay of persons (P1, P2, P3) of a specific group of persons at at least one specific measuring point (MS1, MS2, MS3); and/or b) Accumulated number of times of persons (P1, P2, P3) of a certain group of persons at at least one certain measuring point (MS1, MS2, MS3), as well as determination of a certain measuring point of the system as being more maintenance-intensive and/or accumulation of the maintenance requirement of a component of the system and use of the link; and a) Accumulated duration of stay of persons (P1, P2, P3) of a specific group of persons at at least one specific measuring point (MS1, MS2, MS3); and/or b) Accumulated number of times of persons (P1, P2, P3) of a certain group of persons at at least one certain measuring point (MS1, MS2, MS3), as well as determination of a certain measuring point of the system as being more maintenance-intensive and/or accumulation of the maintenance requirement of a component of the system and use of the link; and - Output of the result to an operator.