Stephen Harper's son has penned a column criticizing the fiscal policies of Justin Trudeau and his father.

Benjamin Harper's op-ed piece for the Ottawa Citizen, published Wednesday, takes aim at the Trudeaus' stimulus spending and deficits.

The column is co-authored by fellow Queen's University student Ethan Vera. The two write that, "like a defibrillator applied to a patient who hasn’t experienced a heart attack, fiscal stimulus used improperly has negative consequences."

"Under Pierre Trudeau’s governments of the 1970s and 1980s, the country experienced growing deficits, slowing growth, rising unemployment and rising inflation," the two write, adding that the previous Conservative government's use of stimulus spending during the 2008 financial crisis was "appropriate."

Interim Conservative Leader Rona Ambrose tweeted out Harper's column and worked in a dig at the prime minister.

"Here's the son of a former PM, but this one knows economics," she wrote Thursday.