A useful link concerning factors that influence the supply of labour https://www.theguardian.com/world/2017/jan/03/finland-trials-basic-income-for-unemployed specific to:
Edexcel specification reference
Theme 3 – 3.5.2a Factors that influence the supply of labour
Theme 4 – 4.2.1c Causes of changes in absolute and relative poverty
Click HERE to see APT’s resources for Edexcel resources for AS/A Level Economics Theme1, 2, 3 & 4. 
AQA specification reference Influences upon the supply of labour Policies to promote economic growth and development
Click HERE for details of APT’s AQA resources for AS and A Level Economics