The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "workers" appeared
2017-09-22 : Youth unemployment in the euro area2016-11-30 : The productivity challenge for Europe
2016-06-09 : On the importance of policy alignment to fulfil our economic potential
2015-03-18 : Speech at the inauguration of the New ECB Premises
2014-08-22 : Unemployment in the euro area