Nova Scotia Liberal MP Scott Brison is also on the economic consultative committee, Trudeau said.
The Liberals have put their focus on the middle class lately, hoping to recapture votes they lost in the past two federal elections.
Freeland won the nomination on Sunday to represent the Liberals in a byelection in Toronto Centre, a seat that was held by former interim party leader Bob Rae. The date for the byelection hasn't yet been set.
Freeland quit as managing director and editor of Canadian-owned Thomson Reuters and moved her children — ages 12, 8 and 4 — from New York to Toronto.
Freeland is the author of the award-winning book called The Plutocrats: The Rise of the New Global Super-Rich and the Fall of Everyone Else, which is said to be a big influence on Trudeau, who has named the plight of the middle class as his core issue.
Trudeau is holding the press conference one day after MPs and senators were supposed to be back on Parliament Hill. Prime Minister Stephen Harper asked the Governor General to prorogue Parliament until Oct. 16, when the government will return with a throne speech to lay out a new agenda for the next two years.
On Monday, NDP Leader Tom Mulcair led off a virtual question period on Twitter so the New Democrats could show which questions they would be asking if the House were in session.
The NDP also chose their Toronto-Centre candidate on Sunday, Toronto Star columnist and author Linda McQuaig, over former MuchMusic VJ and journalist Jennifer Hollett.