The tight labor market is prompting more employers to eliminate one of the biggest requirements for many higher-paying jobs: the need for a college degree. Companies such as Alphabet Inc.’s Google, Delta Air Lines Inc. and International Business Machines Corp. have reduced educational requirements for certain positions and shifted hiring to focus more on skills and experience. U.S. job postings requiring at least a bachelor’s degree were 41% in November, down from 46% at the start of 2019 ahead of the Covid-19 pandemic, according to an analysis by the Burning Glass Institute.