The forgotten squeeze on incomes

We hear a lot from the unions about a squeeze on incomes for the blue collar workers they represent but there is another, large group of people who have suffered a much bigger drop in income.
Many middle management positions have gone altogether since the 2008 Great Recession began and older people, especially, who were made redundant from these positions have found it difficult to find other jobs.
According to research by the Resolution Foundation the loss of these middle management posts has contributed to a fall in real wages.
Many of these former managers have turned to self employment, setting up as consultants or outsourcing their skills to companies as needed and this has led to an estimated 20% reduction in their income although I believe the reduction is much greater.
The consequences of this are still to come.  While initially many have been cushioned by redundancy pay, reclaims from their bank due to mis-sold income protection and other insurance products, and low interest rates sooner or later the money will run out.
Having lost out on their occupational pensions, how many of these newly self employed are able to put money aside for their pensions?   How many will be able to repay their mortgages, let alone service them when interest rates rise?
Eventually we will face a serious Welfare payments crisis as more people reach retirement age without adequate provisions, not to mention that there will need to be a substantial correction to house prices, which are over-valued by up to 30% in our view.