EHS101: WHMIS AND LAB SAFETY
EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026
Interchangable terms - ANS Academic supervisor = principal investigator
lab user includes volunteers, guests, guest researchers, contractors, students, visitors, and
employees
Course learning objectives - ANS -understand internal responsibility system
-types of enforcement, penalties and offenses
-understand "due dilligence"
-3 key factors that support due dilligence
-understand WHMIS (workplace hazardous materials information system) and GHS (global
harmonized system)
-lab incidents at U of T
-specific lab situations and basic health requirements
modules - ANS 1: legislation and practices
2: WHMIS
3: Hazard awareness and control
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
,occupational health and safety law - ANS -OHS (occupational health and safety law) put in
place federally and provincially to protect safety of all workers
-U of T covered by *Ontario Provincial Acts and Regulations* and *Federal acts* like *Bill C-45*
internal responsibility system - ANS -underlying philosophy in any OHS act
-the IRS (internal responsibility system) came from *James Milton Ham*, a professor and
president at U of T
-IRS: the idea that employees, management, and employees all share responsibility for health
and safety at U of T
rights of employees - ANS 1. right to refuse unsafe work (s. 43-49)
2. right to participate in health and safety activities (JHSC (joint health and safety committee))
3. right to know about hazards
4. retaliation by employers is prohibited
OHSA general duty clause - ANS take every precaution reasonable in the circumstances for
the protection of a worker (s.25 to h)
incident reporting - ANS online accident/incident form needs to be filled out, found at
www.ehsutoronto.ca
PI duties and responsibilities - ANS -take every precaution reasonable to protect employees
and graduate students
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
, -advise employees of any potential/actual hazards in work place
-ensure students are using protective equipment
-act on behalf of university to ensure safety requirements
employee responsibilities - ANS -act in compliance of OHS acts regulations, and EHS
guidelines.
-use personal protective clothing
-report hazards
-work equipment in safe manner
high hazard chemicals definition - ANS -high toxicity chemicals
-corrosives
-pyrophoric and water sensitive chemicals
-carcinogens
-reproductive toxins
-nanomaterials
Human Pathogens and Toxins Act and U of T Biosafety Commitee require: - ANS -biosafety
permit and biosafety training
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 3
EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026
Interchangable terms - ANS Academic supervisor = principal investigator
lab user includes volunteers, guests, guest researchers, contractors, students, visitors, and
employees
Course learning objectives - ANS -understand internal responsibility system
-types of enforcement, penalties and offenses
-understand "due dilligence"
-3 key factors that support due dilligence
-understand WHMIS (workplace hazardous materials information system) and GHS (global
harmonized system)
-lab incidents at U of T
-specific lab situations and basic health requirements
modules - ANS 1: legislation and practices
2: WHMIS
3: Hazard awareness and control
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
,occupational health and safety law - ANS -OHS (occupational health and safety law) put in
place federally and provincially to protect safety of all workers
-U of T covered by *Ontario Provincial Acts and Regulations* and *Federal acts* like *Bill C-45*
internal responsibility system - ANS -underlying philosophy in any OHS act
-the IRS (internal responsibility system) came from *James Milton Ham*, a professor and
president at U of T
-IRS: the idea that employees, management, and employees all share responsibility for health
and safety at U of T
rights of employees - ANS 1. right to refuse unsafe work (s. 43-49)
2. right to participate in health and safety activities (JHSC (joint health and safety committee))
3. right to know about hazards
4. retaliation by employers is prohibited
OHSA general duty clause - ANS take every precaution reasonable in the circumstances for
the protection of a worker (s.25 to h)
incident reporting - ANS online accident/incident form needs to be filled out, found at
www.ehsutoronto.ca
PI duties and responsibilities - ANS -take every precaution reasonable to protect employees
and graduate students
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
, -advise employees of any potential/actual hazards in work place
-ensure students are using protective equipment
-act on behalf of university to ensure safety requirements
employee responsibilities - ANS -act in compliance of OHS acts regulations, and EHS
guidelines.
-use personal protective clothing
-report hazards
-work equipment in safe manner
high hazard chemicals definition - ANS -high toxicity chemicals
-corrosives
-pyrophoric and water sensitive chemicals
-carcinogens
-reproductive toxins
-nanomaterials
Human Pathogens and Toxins Act and U of T Biosafety Commitee require: - ANS -biosafety
permit and biosafety training
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 3
