Why do unions engage in a global campaign on SDG 8: #timefor8​?

An interview of Radio Labour Barometer with Prof. Trywell Kalusopa of the Zambian Institute for Labour Research and Development (LIZARD).

Why do unions engage in a global campaign on SDG 8: #timefor8?
by TUDCN ITUC
https://www.youtube.com/watch?v=YDrharCh3SY