The unionization effort is among several taking place around the country as increasing numbers of college classes are taught by part-time instructors.

Amazon denied any link between the unionization effort and layoffs.

The collapse of the unionization effort led Wall to retire from union life.

The unions are also demanding that Verizon pledge not to fight any unionization efforts.

Even some students who oppose the aggressive unionization efforts agree that teaching can prolong graduate studies and make it a more trying experience.

It has a history of fiercely resisting unionization efforts.

These committees might also serve as the base for future unionization efforts.

With secret-ballot elections, unionization efforts can drag on for months, often delayed by litigation.

Verizon Wireless has resisted unionization efforts for more than 20,000 employees.

After November, he plans to do some consulting for the federation on how labor can better use its political might to help unionization efforts.