Rallies in cities across the U.S. for what organizers call “A Day Without Immigrants.” An estimated 100,000 immigrants and sympathizers gathered in San Jose, Calif., 200,000 in New York, 400,000 each in Chicago and Los Angeles. In all, there were demonstrations in at least 50 cities - 2006

Tens of thousands of immigrants demonstrate in 100 U.S. cities in a national day of action billed as a campaign for immigrants’ dignity. Some 200,000 gathered in Washington, D.C. - 2006

What was to become a two-month strike by minor league umpires begins, largely over money: $5,500 to $15,000 for a season running 142 games. The strike ended with a slight improvement in pay - 2006

An underground explosion at Sago Mine in Tallmansville, W. Va., traps 12 miners and cuts power to the mine. Eleven men die, mostly by asphyxiation. The mine had been cited 273 times for safety violations over the prior 23 months - 2006

Thousands of workers began what was to be a two-day strike of the New York City transit system over retirement, pension and wage issues. The strike violated the state’s Taylor Law; TWU Local 100 President Roger Toussaint was jailed for ten days and the union was fined $2.5 million - 2005

Mine, Mill and Smelter Workers union organizer Clinton Jencks, who led New Mexico zinc miners in the strike depicted in the classic 1954 movie “Salt of the Earth,” dies of natural causes in San Diego at age 87 - 2005

OSHA reaches its largest ever settlement agreement, $21 million, with BP Products North America following an explosion at BP's Texas City, Texas plant earlier in the year that killed 15 and injured 170 - 2005

Some 4,400 mechanics, cleaners and custodians, members of AMFA at Northwest Airlines, strike the carrier over job security, pay cuts and workrule changes. The 14-month strike was to fail, with most union jobs lost to replacements and outside contractors - 2005

The United Steelworkers and Amicus, the largest manufacturing union in the United Kingdom, announce formation of a strategic alliance to work on a range of mutual concerns - 2005

The Teamsters and Service Employees unions break from the AFL-CIO during the federation's 50th convention to begin the Change to Win coalition, ultimately comprised of seven unions (4 by 2011: SEIU, Teamsters, UFCW and the UFW). They say they want more emphasis on organizing and less on electoral politics - 2005

A federal bankruptcy judge frees United Airlines from responsibility for pensions covering 120,000 employees - 2005

The United Steelworkers and the Paper, Allied-Industrial, Chemical and Energy Workers unions merge to form the largest industrial union in North America - 2005