Department of Labor Logo
OSHA News Brief

July 19, 2022

Spring Grove glass companies earn ‘Star’ level designation
for exemplary workplace safety, health programs


Cardinal Automation Group, Spring Green, Wisconsin
Cardinal Insulated Glass, Spring Green, Wisconsin


Occupational Safety and Health Administration’s Voluntary Protection Program
Star Level Designation

BACKGROUND: The companies have earned recognition for their initiative-taking safety and health programs leading to designation as Star Level VPP sites. ­The Spring Grove companies – employing about 560 workers – are divisions of Cardinal Glass Industries in Eden Prairie, Minnesota.

Cardinal Automation Group produces custom manufacturing equipment for use at various Cardinal Glass Industries’ locations. The company produces monolithic tempered glass panels and assembles insulated glass units.

“Both of these Cardinal Glass Industries’ divisions embed a culture of safety in which all employees voluntarily participate on safety teams, attend training alongside their management team and provide peer review of work areas for safety issues. These sites encourage employee-driven safety solutions,” said OSHA Regional Administrator William Donovan in Chicago. “Star Level designation in the Voluntary Protection Program is the highest safety achievement a company can earn from OSHA. Cardinal’s commitment to safety and health management systems are excellent examples of the value of employee involvement, empowerment and ownership.”

OSHA’s Voluntary Protection Programs recognize and promote effective worksite-based safety and health management systems. In the VPP, management, labor, and OSHA establish cooperative relationships at workplaces that have implemented comprehensive safety and health management systems. Approval into VPP is OSHA's official recognition of the outstanding efforts of employers and employees who have created exemplary worksite safety and health management systems.

Learn more about OSHA.

# # #

Media Contacts:

Scott Allen, 312-353-4727,
Rhonda Burke, 312-353-4807,

Release Number: 22-1511-CHI

U.S. Department of Labor news materials are accessible at The department's Reasonable Accommodation Resource Center converts departmental information and documents into alternative formats, which include Braille and large print. For alternative format requests, please contact the department at (202) 693-7828 (voice) or (800) 877-8339 (federal relay).