Society for Chemical Hazard Communication

 Professional Development Training

California Proposition 65 Labeling Workshop

PDF Brochure — available September 25, 2017

Course Description and Objectives

The goal of this workshop course is to provide an understanding of the labeling obligations under California’s Proposition 65 and the risk-based requirements for determining whether or not a warning is required.  Key topics will covered in informal lectures, but there will be ample time for both working on examples of risk-based labeling decisions and for the discussion of relevant hazard communication aspects of the regulation.

This is considered to be an advanced course. While there are no formal prerequisites for this course, it is strongly recommended that participants have a working knowledge of SDS and labels and that they have either taken the SCHC courses Toxicology for Hazard Communication and Hazard Determination and Risk Assessments or that they are comfortable with the basic principles of toxicology and risk assessment.

Intended Audience

Hazard communication professionals looking to improve their California Proposition 65 labeling skills.


Course Director/Instructor - Robert Skoglund, Ph.D., DABT, CIH


Course Instructor


Catherine F. Jacobson, Ph.D., DABT

Dr. Jacobson is a Senior Toxicology Specialist at the 3M Company.  Her primary responsibilities include assessing the human health hazards and risks of products and other materials for several 3M business units.  In addition, she oversees the authoring of hazard communication documents, develops comprehensive health hazard profiles for chemical substances important to 3M, and serves as the corporate lead for product air quality regulations.


Course Instructor


Robert Roy, Ph.D., DABT

Dr. Roy is a Lead Toxicology Specialist at 3M in St. Paul, Minnesota. His primary responsibilities include assessing the human health hazards and safety of products and other materials for several 3M business units. In addition, he leads the development of the 3M Occupational Exposure Guidelines; and plays a leadership role for California Proposition 65 compliance, consumer product labels, and hazard determination, hazard communication, and human risk assessment issues.


Course Fee

$275.00 for members
$365.00 for non-members

Course Topics and Schedule
(Subject to Change)

Monday, September 25, 2017

12:30 - 1:00


1:00 - 2:10

Overview of California Proposition 65

Refresher on Human Health Risk Assessment

2:10 - 2:25


2:25 - 3:35

Human Health Risk Assessment Specific to Proposition 65

Proposition 65 Lists

The Risk Assessment Process - Assumptions, Inputs and Methodology

Safe Harbor Levels and their Calculation

The Importance of Exposure Assessment in Proposition 65

3:35 - 3:50


3:50 - 5:00

Class Workshop Activities - Work on Problems Relating to Proposition 65 Labeling and Warning


Refer to brochure for registration, cancellation, hotel information.