Persepsi risiko kecelakaan pada pekerja panen di Unit Kelapa Sawit PT. X Sumbar tahun 2008 = Accident risk perception of harvesting worker on pal oil unit at PT. X Sumatra Barat 2008

Persepsi perawat terhadap risiko keselamatan dan kesehatan kerja di instalasi rawat inap RS Kanker "Dharmais" tahun 2017 = Nurse perception of occupational health and safety risk in inpatient unit of RS Kanker "Dharmais" in 2017

Analisis persepsi risiko keselamatan dan kesehatan kerja pada karyawan di PT. Terang Parts Indonesia = Analysis of risk perception on occupational health and safety of employees at PT Terang Parts Indonesia

Analisis penerapan budaya keselamatan kerja di PT JHH Tahun 2018 = Analysis of the implementation of work safety culture at PT JHH in 2018

Analisis komitmen manajemen pada penerapan contractor safety management system (CSMS) di PT. X tahun 2013 = Analysis of management commitment on contractor safety management system (CSMS) implementation at PT. X th 2013