Len McCluskey will kick off a three-week tour of Britain and Ireland tomorrow to visit workplaces and uncover how government austerity policies have affected them.
The Unite general secretary will be visiting leading manufacturers including Bombardier in Belfast tomorrow followed by a meeting with finance workers in Dublin on Friday.
He aims to discover first-hand from workers and businesses how government polices are affecting life at home and work on both sides of the Irish Sea.
Mr McCluskey said: "The governments of the UK and Ireland both told the people of their nations that they must pay for the bankers' casino crash.
"The austerity addiction must be kicked. It is not necessary - there are genuine alternatives - and it is not working for our nations."
As Aslef's annual assembly of delegates begins in Edinburgh tomorrow the general secretary explains the challenges his members - and workers across the country - face