https://www.hamiltonproject.org/assets/files/UnionsEA_Web_8.19.pdf
https://www.ituc-csi.org/IMG/pdf/2024_ituc_global_rights_index_en.pdf
https://www.esri.ie/system/files/publications/JR2.pdf
http://futurion.se/wp-content/uploads/2018/03/Futurion_Rapport_2018-1_webb.pdf