American workers are getting squeezed like no other group by private health insurance premiums that are rising much faster than their wages, according to a study. While just about all retirees are covered, and nearly 90% of children have health insurance, workers now are at significantly higher risk of being uninsured than in the 1990s, the last time lawmakers attempted a healthcare overhaul, according to the study for the Robert Wood Johnson Foundation. The study also found that nearly 1 in 5 workers is uninsured, a significant increase from fewer than 1 in 7 during the mid-1990s.