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Local 501 Las Vegas Organizing
Sponsored by the International Union of Operating Engineers

About IUOE Local Union 501

Raising working standards for our members in Las Vegas


International Union of Operating Engineers (IUOE) Local 501, AFL-CIO was formed in 1953 by the merger of several regional locals.  Local 501 has grown to one of the largest Stationary Engineer Locals in the entire United States. Over the decades the Local has established itself as a pillar of highly trained, multi-skilled trade unionists throughout the Labor community. The type of work the members perform is Maintenance and Repair of all HVAC equipment, Boiler Operation, Electrical, Plumbing, Welding, or in general, all trade related maintenance and repair. The Local takes pride in not only representing a diverse group of individuals, but also helping that group continue to advance its skills through training and acquiring the knowledge necessary to advance through their career.

Local 501 represents workers in southern California and southern Nevada, including over 2,000 casino workers in the city of Las Vegas.



Below is a list of the various Las Vegas casino properties where Local 501 represents maintenance engineers, slot technicians and other workers.



Excalibur Hotel and Casino

MGM Grand

Riviera Hotel and Casino


Flamingo - Las Vegas

Monte Carlo


Bally's Las Vegas

Four Queens

New York-New York



Four Seasons Hotel


The Cromwell

Binion's Gambling Hall and Hotel

Fremont Hotel and Casino

Paris Las Vegas

The Mirage

Caesars Palace

Harrah's Las Vegas

Planet Hollywood

The Quad

California Hotel and Casino

Luxor Hotel and Casino

Plaza Hotel and Casino

Treasure Island

Circus Circus - Las Vegas

Las Vegas Hilton

Rio All-Suite Hotel and Casino

Tropicana Hotel and Casino

El Cortez

Mandalay Bay


This website was created to provide prospective members with information about Local 501.  In particular, we hope our message reaches maintenance engineers and slot technicians, our core trades, working in the Las Vegas casino industry.  The site will feature information on the Local’s recent organizing victories in Las Vegas, details on its defined benefit pension fund, its training center, facts about Local 501’s recently negotiated Strip casino contracts, and also video clips of member testimony about their experience with Local 501 in Las Vegas.

For workers in non-union properties thinking about organizing with Local 501, this site will also include information on anti-union tactics sometimes employed by company management and their hired union busters.  We will offer facts about Local 501 and highlight workers’ rights and protections under the law.