The state inspectorate for workers' safety and rights. At Zijin, after a worker was killed in 2022, it found that there had been no risk assessment for his job, and in 2025 that smelter workers were not protected from heavy metals; at the EXPO construction site it found 30 foreign workers without work permits. According to parents, the director of the Jovan Jovanović Zmaj Grammar School did not allow it to carry out an inspection, so it sought misdemeanour proceedings against him.