“…Studies investigating the relationship between language proficiency and immigrants' labour market performance have shown that host-country language proficiency has an impact on employment possibilities and earnings. For example, researchers have found a relation between speaking and writing proficiency and immigrants' earnings in Germany (Dustmann, 1994), between language skills and employment possibility of immigrants in the UK (Dustmann & Fabbri, 2003), Italy (Luca et al, 2022), and Switzerland (Wong, 2022), between English proficiency, age of arrival, and earnings among US immigrants (Bleakley & Chin, 2004), and between sign language proficiency of Chinese deaf signers and their occupational prestige and income (Zheng, Lin & Gu, 2023). Recent studies also suggest that there is an effect of language proficiency on the gender wage gap (Miranda & Zhu, 2020), for example due to a negative effect of immigrants' language problems on females' hourly wages (Yao & van Ours, 2015).…”