The House of Delegates and state Senate have adopted resolutions calling for Patriot Coal to honor its commitments.
Dennis Baisden, 62, of Logan, retired last week from Patriot subsidiary Apogee Coal in southern West Virginia because of health problems.
"I depend on my medical benefits to take care of me, and here they're threatening to take them all away," Baisden said. "It's time for the workers to stand up for their rights."
The arrests occurred on steps leading to Patriot Coal's offices after Roberts and the others refused a police order to move.It marked the third time since late January that Roberts had been arrested in protests. The other arrests occurred in St. Louis, where Peabody, Patriot and Arch Coal are based.