The report by international consulting firms Mercer, Oliver Wyman and Marsh and McLennan Companies’ Global Risk Center, "The Twin Threats of Aging and Automation," outlines the factors that could make growing old in an increasingly automated future a painful process.

Given that by 2050, over a third of the world's population is expected to be over 50, up from 15.7 percent in 1950, the issue is one that increasing numbers of us will have to face.

To take just one alarming statistic from the report, only 10 percent of adults aged 55–65 are able to complete new multiple-step technological tasks, compared with 42 percent of adults aged 25–54, for example.

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"Unlike in previous industrial transitions, where productivity rose while skill requirements remained similar between different kinds of low-skilled work, today's transition will require low and basic-skilled workers to face a far steeper learning curve in order to remain productive," it said.

The report also notes that wages have not kept pace with gains in productivity since the 1980s, driven by globalization of capital and a decline of trade unions. Add automation to that mix, then the working class elderly have been hit dispropropionally hard.

"The confluence of these trends raises one crucial question: What effect will increased workplace automation have on older worker populations?" the report asks.

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(Let's all) look on the bright side of life

Axel Miller, one of the report's authors, believes there are reasons to be optimistic.

"The picture may look a little bleak, that with an aging population and greater automation, older people will find it more difficult to cope in the future," Miller said. "But there has been a much greater awareness of these changes."

He says we need to look at the predictors of the automatability of older-persons' work, namely education levels, the size of the manufacturing sector, levels of public spending and the strength of legal rights around financial systems.

As automation increasingly enables unprecedented levels of productivity, firms' capacity to invest in new revenue streams and new economies will expand, he pointed out.

"Shrinking populations could also spell rising wages as labor shortages become exacerbated, for example. Also, given that automation tends to increase as aging increases, technology could act as a welcome replacement for the jobs left behind by retirees — and therefore not displace older workers at all," the report reads.

"Much like the industrial revolutions of the 18th and 19th centuries, which created manufacturing jobs in an age of agricultural production, today's fourth industrial revolution may create new kinds of jobs as well," it said.

As populations age, traditional demographics cease to have the same meaning

"We like the idea of the 'gig economy' being translated to elderly people, keeping them in the productive system for longer and then easing them into retirement," Miller says.

"In general, a much stronger focus on learning and development, i.e. up- and re-skilling staff, rather than replacing them, is seen as the way forward," pointing to the success of AT&T as a good example.

Changing perceptions of work

"The idea that automation should generate possibilities for more creative solutions to work, to rethinking the connection between work and pay, to the social aspects of work, is beginning to take hold," Miller says.

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Jobs are no longer the organizing unit for work; rather, there is a redistribution of tasks between humans and machines, depending on who is best suited to do the job, the report says. "With the rise of new technologies, we will see the emergence of new roles associated with the design, development and maintenance of new technologies," it notes.

Human work will need to evolve rapidly to keep pace — in fact, the WEF's Future of Jobs report warns that only 35 percent of today's skills will be applicable in 2020.

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Another relevant factor is government welfare, Miller says. "In countries with more government consumption spending and higher pension replacement rates, older workers tend to be doing higher-skilled work." And he wants to see concerted efforts on the part of governments and companies to devise strategies for encouraging and accommodating the older worker.

Geographical breakdown:

-High-risk emerging Asia Pacific (China, Vietnam and Thailand)

These have very high rates of projected older worker growth and many older workers employed in highly automatable work. As manufacturing hubs, they are at a high risk of worker displacement at the hands of advancing technology. With global manufacturers reshoring and automating their operations and domestic industries in these countries shifting from manufacturing to higher-value goods and services, older workers in these countries are likely to face serious fallouts.

-High-risk developed Asia Pacific (Singapore, Japan and South Korea)

Despite being developed economies, they also have older worker populations at high risk of automation and experiencing rapid aging. Notably, South Korea and Singapore were found to have older workers that face far higher risks of displacement than younger workers — more so than in many other nations sampled.

-High-risk Europe (Italy and Germany)

Italy is both rapidly aging and has a large older worker population doing automatable work. Younger workers are at higher levels of risk compared with older workers — but the report notes that this indicates the country is at high levels of risk across key age groups.

In Germany, older workers have one of the highest "average risk of automation" scores in Europe at 57 percent. Manufacturing and low-skill service industries in Germany are already facing widespread disruption at the hands of technology and these industries are common employers for older people as well. Although these older worker populations aren't projected to rapidly grow, they will still make up more than a third of the working age population by 2030.

German Chancellor Angela Merkel speaks with a 100-year-old resident at the St. Johannesstift senior care facility in Paderborn

-At-risk Europe (UK, Sweden and Switzerland)

With older workers doing work that is more than 45 percent automatable and with older worker populations projected to increase going into 2030, the UK, Sweden and Switzerland will soon also find themselves facing these twin trends head on. Older workers are commonly found in low-skill work in these nations, in comparison with younger workers — considerably more so than in other developed nations such as Australia or Canada. The onset of aging and automation trends are likely to be particularly pronounced in the UK, where controls on immigration following Brexit will speed up the aging of the working population.

-At-risk Americas

Older workers are on average employed in work that is over 45 percent automatable. Like many Asian nations, Chile's older worker jobs are at particularly high rates of risk of automation — at 63 percent — and the nation is projected to age rapidly going into 2030.

By contrast, older worker populations in Canada and the US are projected to shrink as a proportion of the working age population by 2030, and these nations have comparatively much lower risks of automation to older workers. The report says these trends may be impacted by changes in immigration policies. As politicians in the US restrict foreign labor, the aging of the American workforce could increase and the skill composition of workers may shift as a result.