NEW YORK (AP) — Employers are increasingly losing patience with unvaccinated workers.

A growing number of businesses are requiring their employees to get vaccinated against COVID-19, alarmed by the rise of the more contagious delta variant and frustrated that vaccination rates in the U.S. have plateaued.

Others are stopping short of a mandate while taking steps to make it more onerous for workers to remain unvaccinated, requiring them to take regular COVID tests or denying them certain privileges reserved only for the vaccinated.