What was said, research wise regarding Unemployment is predicated on first datasets developed in 1973 -> 1976. This means that the resulting conclusions were based upon a US industrial labor pool. Of course these assumptions were stated in those papers (available from JSTOR) they are not stated in current conversations about UI (unemployment insurance).

“In manufacturing, about 75% of those who are laid off return to their original employers. More generally, among all persons classified as “unemployed job losers,” temporary layoffs account for about 50 percent of all unemployment spells. — 1978 AEA, Feldstein

Incentive is a reason… a money reason. To be understood, mathematically and rigorously, “incentive” is drawn with “information.”

it is called “insurance” for a reason. Suppose your insurance agent just decided to stop paying you because he thought it was making you lazy. Enjoy your house of cardboard.