Renee Dudley

Walmart Stores Inc.’s move to eliminate health insurance for about 30,000 part-time workers underscores the mixed benefits of Obamacare for companies and their employees.

The number of Fortune 500 companies offering health care benefits to same-sex partners has surged in a decade, to about 62% last year from 34% in 2002, according to the Washington-based Human Rights Campaign.