https://www.imf.org/-/media/Files/Publications/DP/2021/English/EMPSOUPEA.ashx
https://www.cps.org.uk/files/reports/original/201001000814-CPSUPWARDLYMOBILE2.pdf
https://www.iso.org/files/live/sites/isoorg/files/store/en/PUB100456.pdf
https://www.aljazeera.com/features/2024/8/10/migrant-workers-sent-650bn-overseas-last-year-what-it-means