We are still quite far from the type of automation that will allow for 5% employment. Even if the majority of production is automated, there are still many other components of a goods producing business that may not be automated if they are competing in a relatively free market. Procurement, logistics, marketing, sales, support, R&D, etc. would still require a human component without AI right? Then there are service industries.
True, automation require a lot of R&D, and when complexity raised above certain level, the cost will be higher than the gain. In a highly complex system, a small bug will cause days of delay in automated system, which could trigger a chain of reaction.
But anyway that is the trend, maybe not 5%, but 20%, there should be a framework that can be adjusted based on how much labor is needed to re-allocate the resource to those redundant people. Current solution is printing lots of money to create lots of useless job just to make people get something to do, not a bad idea but far from efficient