Industry Resources

Workforce Protective Leagues

The craft of glassmaking has been a part of America’s manufacturing heritage since Colonial Jamestown was established in 1608. Today, there are 16,000 skilled workers employed by glass container manufacturing companies across 42 plants in 20 states.

The Glass Packaging Institute values the contribution of this workforce and what it means to local, state and national economies. Their ideas, energy and commitment are key to a quality packaging product, one made from all-natural, readily-available domestic raw materials.

We are proud to work on behalf of the men and women of the glass container manufacturing industry and the member companies that employ them. We will be sharing information and ideas with League members at regional and national gatherings throughout the country, as well as on this section of the web site.

Upcoming 2019 Glass Protective League Meetings

Multi-State Protective League Meeting 
Hosted by the Central States Protective League
June 19-21, 2019
4700 N. Port Washington Road
Milwaukee, WI 53212 
The room rate is $139 per night - The code for the rate is L20.
Schedule of Events
Wednesday, June 19 
10:00a – 12:00p Registration ~ Lobby
5:00p – 9:00p Registration ~ Lobby
Thursday, June 20 
8:30a Tour Harley Davidson ~ W156 N9000, Pilgrim Road, Menomonee Falls, WI 53051
11:00a Tour Miller Brewing Company ~ 4251 W State Street, Milwaukee, WI 53208
7:00p Dinner ~ On the Patio 
Friday, June 21
10:00a Business Meeting ~ Anchorage Hall

CLICK HERE to view speaker list and additional meeting details

GPI League Presentations and Regional One-Pagers

GPI 1-Pager, Southeast Protective League (Winston-Salem, NC May 2018)

GPI Presentation to the Central States Protective League (French Lick, IN April 2018)

GPI 1-Page Issue Summary, Central States Protectie League (French Lick, IN April 2018)

GPI Presentation to the West Coast Protective League(Sacramento, CA March 2018)

GPI 1-Page Issue Summary, West Coast Protective League Meeting, (Sacramento, CA March 2018)

Multi-State Meeting (August 2017, Anaheim, CA)

GPI Presentation at the West Coast Protective League Spring MeetingMarch 12, 2016

GPI Presentation at the 2015 GMP-IU Multi-State Protective League MeetingSeptember 25, 2015

GMP-IU Workforce Testimonials and Videos

Longtime California Glass Container Worker Shares Industry Perspective, Charles "Animal" McIntyre, Past WCPL President, Gallo Glass Company

Industry Workforce Members Reflect on the Value of the Glass Container Manufacturing

Glass Container Industry Workforce Highlights Glass Bottle Craftmanship in Video Promoted at the 2016 Craft Brewers ConferenceApril 10, 2016

GMP-IU Testimony

GMP-IU Provides Massachusetts Legislators Testimony Against Bottle Bill Repeal, June 12, 2017

O-I Workforce Letters Urging Caution on Cap and Trade Program Revisions, 2nd Letter, April 3, 2017

Central States Protective League Opposes Repeal of Iowa's Bottle Bill Program, February 27, 2017

Central States Protective League Issues Strong Statement of Support for Iowa's Beverage Container Recycling Refund ProgramMay 24th, 2016

Thank You Letter to Indianapolis Mayor Joe HogsettMarch 29, 2016

GMP Supports Maryland Senate Bill 367, to Create a Beverage Container Recycling Refund Program and Improve Glass Recycling, February 10, 2016

GPI's GlassWorks is a publication that highlights the glass container industry workforce and company efforts.

GlassWorks - December 2017

GlassWorks - July 2017

GlassWorks - February 2017

GlassWorks - June 2016

GlassWorks - December 2015 

GlassWorks - July 2015

GMP members talk about their experiences with policymakers and other stakeholders on the benefits of a strong glass container manufacturing industry.




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Through GPI, glass container manufacturers speak with one voice to advocate industry standards, promote sound environmental and recycling policies, and educate packaging professionals. Learn More