The Programme for the International Assessment of Adult Competencies (PIAAC) is a programme of assessment and analysis of adult skills. The major survey conducted as part of PIAAC is the Survey of Adult Skills. The Survey measures adults’ proficiency in key information-processing skills - literacy, numeracy and problem solving - and gathers information and data on how adults use their skills at home, at work and in the wider community.

This survey included an assessment of the language skills of migrants, and it was found that language skills impact on thw wages of migrants in comparison with native speakers. The survey indivated that language training increases job opportunities.