STSC Incident Investigation and OSHA Recordkeeping

Question 1

Under OSHA 29 CFR 1904, which of the following injuries is recordable on the OSHA 300 Log?

Accepted Answer

A sprained wrist for which a physician prescribes medication

Answer

OSHA recordable cases include work-related injuries or illnesses requiring medical treatment beyond first aid. Prescription medication crosses that threshold and makes the case recordable. First-aid-only treatment, OTC medication, and non-work-related conditions are not recordable.

Question 2

Which root cause analysis tool organizes contributing causes into categories (people, equipment, methods, materials, environment) that branch from a central problem statement?

Accepted Answer

Fishbone (Ishikawa) Diagram

Answer

The Fishbone (Ishikawa) Diagram visually maps cause-and-effect relationships, with categories of causes branching off a central 'spine' that represents the incident. It helps investigation teams systematically identify contributing factors across multiple domains simultaneously.

Question 3

After a recordable injury, within how many calendar days must a supervisor complete OSHA Form 301 (Injury and Illness Incident Report)?

Accepted Answer

7 calendar days of being notified

Answer

OSHA requires Form 301 (or an equivalent workers' compensation first report of injury) to be completed within 7 calendar days of the employer being notified of a recordable work-related injury or illness. The same deadline applies to updating the OSHA 300 Log.

Question 4

A worker on a steel erection crew narrowly avoids being struck by a dropped bolt — no injury results. Why is it important to formally investigate this near-miss?

Accepted Answer

Near-misses share the same root causes as actual incidents and signal systemic hazards requiring correction

Answer

Near-misses indicate that the conditions for a serious accident already exist. They share the same contributing factors as actual incidents, and investigating them allows organizations to correct hazards before someone is harmed. The concept is sometimes illustrated by Heinrich's Triangle, which shows that many near-misses precede each serious injury.

Question 5

Employers with 10 or more employees are required to post the OSHA 300A Annual Summary of Work-Related Injuries and Illnesses:

Accepted Answer

In a prominent workplace location from February 1 through April 30 each year

Answer

OSHA requires the 300A summary — which covers the prior calendar year's recordable injuries and illnesses — to be posted in a visible location for employees from February 1 through April 30. It must be certified by a company executive and is separate from the 300 Log itself, which is maintained year-round but not posted.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Incident Investigation and OSHA Recordkeeping