The real flaw in arguments like Max's is the underlying assumption there is a "fixed" number of jobs. This is a subset of the larger fallacy there is a "fixed" amount of wealth.
Consider the situation with Information Technology. Up until the 1930's, a "computer" was a job title for a mathematically inclined person who did routine mathematical equations. The job market for "computers" exploded with the demands of WWII, but since there is a limited number of people who can actually do the job and many applications (like ballistic fire control computers, designing military aircraft and the Manhattan Project) far outstripped the supply and ability of human computers, mechanical and then electronic computers came to the fore. Human "computers" became obsolete, but new classes of jobs involving programming computers and maintaining the infrastructure were created instead.
The invention of personal computing, large scale networking and the Internet have driven an explosion of demand for programmers, IT techs, web designers and associated personnel, most of who's job descriptions did not even exist in the 1980's.
A similar situation exists in resource extraction, as materials like copper and steel are supplemented by silicon and composites. New jobs are appearing and old jobs are being eliminated to reflect the switch.
Finally, the overall numbers of jobs rise and fall with the economy. Bursts of wealth creation like the "Go Go 60's", and the Reagan Revolution are accompanied by massive surges in job creation, while times of economic contraction like the Great Depression and today's economic slowdown see the shedding of jobs.
The real goals of eliminating the CRA and mandatory retirement are to maintain the pool of skilled labour (since our demographic bust will reduce the number of workers overall) and reduce the pressure on the "entitlements" budget, as changing the retirement age is a prelude to changing the eligibility and start dates for CPP, OAS and unfunded liabilities like government pensions (est to be $500 billion in Canada, over $2 trillion in the US).