He says the plan appears to remove much of the flexibility needed to meet the specific labour market needs of the province.
Sousa says he's concerned that it could force Ontario to divert existing resources that serve under-represented groups to the newly designed program.
The federal Conservatives say the Canada Jobs Grant will take skills training choices out of the hands of government and put them in the hands of employers and job-seekers.
The plan won't kick in until April 2014 and is contingent on negotiations with the provinces.
The provinces are expected to foot the bill for a third of each $15,000 training grant, with Ottawa and the employer providing $5,000 each.