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Today we will discuss NR-4 (Specialized Services in Safety Engineering and Occupational Medicine), a standard that causes many disagreements due to the dimensioning of the SESMT, which is the acronym for Specialized Services in Safety Engineering and Occupational Medicine, and the way to do it. Let's look at its main points. Currently, the following professionals are considered members of the SESMT: Occupational Safety technician; Occupational Safety engineer; Occupational Nursing assistant; Occupational nurse and occupational physician. The Occupational Safety technician and the Occupational Nursing assistant must dedicate eight hours a day (full-time workload) to the activities of the SESMT. The Occupational Safety engineer, the occupational physician and the occupational nurse must dedicate at least three or six hours a day (part-time and full-time, respectively) to the activities of the SESMT, whichever is established by Table II of NR-4. Their dimensioning occurs according to the risk gradation of the main activity and the total number of employees of the establishment. *If more than half of the employees perform activities with a higher degree of risk than the main activity, the dimensioning should be based on the activity with the highest degree of risk. It is important to note that the NR uses the term “employees”, precisely because the number of outsourced workers does not influence the formation of the SESMT, which is why the term “collaborators” or “workers” is not used. Definitely, only employees governed by the CLT. There are some items and sub-items that address the formation of the SESMT related to the management of third parties, but one of the most important is perhaps 4.5.1, which states that when a contracting company and its contractor do not fit into the dimensioning of table II separately, but the total number, adding the contractor and contractor(s), reaches the limits existing in said table, a common SESMT should be constituted. #SextoucomNR #NR4 #SSTOnline