Bloomberg via Getty Images General Motors Co. workers gather for an information meeting at Unifor Union Hall in Oshawa, Ont., Mon. Nov. 26. GM announced on Monday that the Oshawa plant will be

The shutdown of General Motors Canada's long-running and iconic auto plant in Oshawa, Ont., is a powerful symbolic blow to Canada's economy, but the good news is that, alone, it won't do much damage — except in Oshawa and surrounding areas. GM Canada announced on Monday that the Oshawa plant will be "unallocated" as of 2019, meaning no new production is scheduled there. For Oshawa, the loss of nearly 3,000 jobs will be "impactful," economists at the Bank of Montreal wrote in a special report Tuesday, "as the job losses consist of solid middle-income and some upper-income earners." Watch: GM's Oshawa closure by the numbers (story continues below)

In all, Oshawa and surrounding areas will see incomes shrink by $300 million once the plant is shut, the BMO report estimated. A loss of income that large will likely hit the region's broader economy, potentially slowing retail sales and softening the housing market. In terms of the whole auto industry, the job losses in Oshawa are notable but not catastrophic. "The reality is that it's a blip, it's a fly speck," said Dennis DesRosiers of DesRosiers Automotive Consultants, a prominent industry analyst. "There are over 800,000 jobs in the automotive sector (in Canada) and this is 2,500 (unionized) jobs," DesRosiers said in a phone interview. That number refers to jobs that are both directly and indirectly linked to the automotive sector. The industry directly employs about 140,000 people. Earlier on HuffPost Canada: Mexican Auto Jobs Quadrupled As Canada's Industry Shrank: Report

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Canada's Auto Industry Never Recovered From Great Recession: Report DesRosiers noted that three decades ago, there were more than 30,000 jobs at GM's Oshawa plant, and today it's below 3,000. "No one seems to care about all the jobs that already disappeared." But the decision to shut down the Oshawa plant could have ripple effects through Canada's auto parts industry, as some parts manufacturers relied on the assembly plant. As many as 15,000 additional jobs will be at risk when the Oshawa assembly plant shuts, Automotive Parts Manufacturers Association president Flavio Volpe told Global News. "The canary in the coal mine has been dead in the cage for about a decade at this point. And we're just noticing that now."Dennis DesRosiers, DesRosiers Automotive Consultants Still, the impact on Ontario's broader economy will be limited, the BMO economists forecast. The province's economic output will shrink by 0.3 to 0.5 per cent, not enough to "move the needle" on Ontario's unemployment rate. And for Canada as a whole, the effect will be even more diluted, with a 0.1 to 0.2-per-cent hit to the economy, BMO said. In Canada's $2-trillion-plus economy, those small percentages still amount to a noticeable economic hit. But it is a fact that the auto industry is not what it once was in Canada, and changes to the industry just don't have the same impact they used to. Since peaking in 2005, the auto industry has been shrinking as a share of Canada's economy. It took a particularly large hit during the Great Recession of 2008-09, and never quite recovered from those losses. Both employment and auto production are lower today than they were before the Great Recession a decade ago.

BMO Economics Both production and employment in Canada's auto industry plunged during the last recession, and neither recovered to pre-recession levels.