"Unionization efforts" refers to the actions taken by workers to establish or join a labor union in order to collectively represent their interests and negotiate for better wages, benefits, and working conditions. Full definition
The company claims this is an attack by the United Auto Workers over UAW's unsuccessful unionization efforts at the plant. (businessjournalism.org)
Cuomo isn't in any way totally cut off from normal Democratic areas of strength, finding support at a rally celebrating a successful unionization effort by nurses at the Albany Medical Center, and using his appearance at Al Sharpton's National Action Network convention to announce the plan to restore voting rights for parolees. (gothamgazette.com)
UTLA took a number of complaints to the Public Employee Relations Board (PERB), claiming that Alliance leaders were illegally blocking unionization efforts, at Alliance has lost some rulings before PERB and a state judge, who issued a temporary restraining order against Alliance. (laschoolreport.com)