

The Occupational Safety Leadership Podcast
Dr. Ayers/Applied Safety and Environmental Management
Interviews along with a Q&A format answering questions about safety. Together we‘ll help answer not just safety compliance but the strategy and tactics to implement injury elimination/severity.
Episodes
Mentioned books

Mar 11, 2024 • 5min
Episode 124 - Top 5 Reasons to Work Safely - AI Generated
Episode 124 takes a creative turn by using AI to generate the top five reasons employees should choose to work safely. Dr. Ayers uses this episode to show how safety messaging can be refreshed, modernized, and made more engaging—especially when traditional reminders start to lose their impact.
Core Message
Working safely isn’t about rules—it’s about protecting what matters most. The episode reframes safety in a way that connects emotionally, practically, and personally with every worker.
Top 5 Reasons to Work Safely (as highlighted in the episode)
1. You Matter to People Who Need You
Family, friends, coworkers—someone is counting on you to come home whole. Safety is an act of responsibility and love.
2. Your Future Depends on Today’s Choices
A single shortcut can change a career, a lifestyle, or long‑term health. Safe decisions protect your earning power, mobility, and independence.
3. Your Team Is Stronger When You Work Safely
Safe habits build trust. When one person works safely, it encourages others to do the same, creating a culture where everyone looks out for each other.
4. Safety Protects Your Quality of Life
Avoiding injuries means enjoying hobbies, family time, and the things that make life meaningful. Safety isn’t just about avoiding harm—it’s about preserving freedom.
5. You Set the Standard for Others
Your actions influence new hires, younger workers, and peers. Working safely shows leadership, professionalism, and pride in your craft.
Practical Takeaway
Safety messages don’t have to be stale. When framed in human, relatable terms, they resonate more deeply and inspire better decisions. Episode 124 shows how even AI‑generated content can reinforce the core truth: working safely is always worth it.
@theoccupationalsafetyleade8465

Mar 7, 2024 • 9min
Episode 123 - OSHA and NIOSH Sampling Methods
Episode 123 breaks down the differences between OSHA and NIOSH sampling methods—two of the most widely used approaches for evaluating workplace exposures. Dr. Ayers explains how each organization develops its methods, why they sometimes differ, and what safety professionals need to understand to choose the right one for their situation.
Core Message
OSHA and NIOSH sampling methods serve different purposes. OSHA methods support enforcement, while NIOSH methods support research and best‑practice exposure assessment. Knowing the difference helps safety leaders make smarter decisions about monitoring and compliance.
Key Points from the Episode
1. OSHA Sampling Methods
Designed primarily for compliance and enforcement.
Methods are validated to support legal defensibility.
Focus on sampling for substances with OSHA PELs.
Often specify equipment, flow rates, media, and analytical techniques.
Prioritize consistency and repeatability for inspections.
2. NIOSH Sampling Methods
Developed for research, exposure science, and best practices.
Methods often more current, with updated science and improved detection limits.
Cover a wider range of chemicals and emerging hazards.
Frequently used when OSHA has no method or outdated limits.
Support proactive exposure assessment, not enforcement.
3. Why the Methods Differ
OSHA PELs are decades old and rarely updated.
NIOSH methods evolve with new science and technology.
OSHA must use methods that hold up in court; NIOSH can innovate more quickly.
Some OSHA methods reference older equipment or analytical techniques.
4. Choosing the Right Method
For compliance sampling, OSHA methods are preferred.
For risk assessment, baseline monitoring, or emerging hazards, NIOSH methods may be more accurate.
Many organizations use NIOSH methods to get better data, then compare results to OSHA limits.
The key is understanding the purpose of the sampling effort.
5. Practical Implications for Safety Leaders
Don’t assume OSHA methods are the most current or sensitive.
Use NIOSH methods to identify hazards early and improve controls.
Use OSHA methods when preparing for inspections or verifying compliance.
Document your rationale for the method you choose.
Practical Takeaway

Feb 26, 2024 • 30min
Episode 122 - Bryan Haywood - Permit and Non-Permit Required Confined Spaces
Episode 122 brings Bryan Haywood back to break down one of the most misunderstood topics in confined space safety: the difference between permit‑required and non‑permit required confined spaces. He explains why the distinction matters, how to classify spaces correctly, and the risks organizations create when they oversimplify or mislabel spaces.
Core Message
A confined space is only “non‑permit” if all hazards are eliminated—not controlled, not reduced, not monitored… eliminated. Most spaces people think are “non‑permit” actually require a permit.
Key Points from the Episode
1. What Makes a Confined Space
Bryan reinforces the three criteria:
Large enough to enter
Limited entry/exit
Not designed for continuous occupancy
If all three apply, it’s a confined space. Then you determine whether it’s permit‑required.
2. Permit‑Required Confined Spaces (PRCS)
A space becomes permit‑required if it has any of the following:
Actual or potential hazardous atmosphere
Engulfment hazard
Internal configuration that traps or asphyxiates
Any other recognized serious safety or health hazard
If even one hazard exists, it’s PRCS.
3. Non‑Permit Confined Spaces
A confined space can be classified as non‑permit only if:
All hazards are completely eliminated, not just controlled
No atmospheric hazards exist or could develop
No mechanical, electrical, or process hazards remain
The space cannot create a new hazard during entry
Bryan stresses that “ventilated safe” is not the same as “hazard eliminated.”
4. Common Misclassifications
Bryan calls out frequent mistakes:
Calling a space “non‑permit” because “we’ve never had a problem”
Relying on ventilation instead of eliminating hazards
Ignoring potential atmospheric changes
Treating routine entries as justification for downgrading the classification
These errors lead to serious incidents because workers enter without proper controls.
5. Why the Distinction Matters
Permit spaces require trained entrants, attendants, and supervisors
Rescue planning changes dramatically between classifications
Atmospheric monitoring is mandatory in PRCS
Documentation and oversight increase safety and accountability
Misclassification removes critical layers of protection
6. Bryan’s Practical Advice
When in doubt, classify as permit‑required
Re‑evaluate spaces when processes, chemicals, or conditions change
Train employees on the difference—not just the definitions
Never downgrade a space without a documented hazard‑elimination process
Practical Takeaway
Most confined spaces are permit‑required, and treating them as anything less puts workers at risk. Bryan Haywood’s message is clear: hazard elimination—not convenience—determines classification. When organizations classify spaces correctly, they prevent incidents and strengthen their entire confined space program.

Feb 26, 2024 • 4min
Episode 121 - NIOSH Current Intelligence Bulletins (CIBs)
Episode 121 explores NIOSH Current Intelligence Bulletins (CIBs)—one of the most important but often overlooked tools for staying ahead of emerging occupational health hazards. Dr. Ayers explains what CIBs are, why they matter, and how safety leaders can use them to strengthen hazard identification and protect workers long before regulations catch up.
Core Message
CIBs are early‑warning documents. They alert safety professionals to new, emerging, or evolving hazards—often years before OSHA standards or industry guidance are updated.
Key Points from the Episode
1. What NIOSH CIBs Are
Scientific bulletins that summarize the latest research on occupational hazards.
Focus on new risks, emerging technologies, or updated toxicology.
Provide recommendations for exposure limits, controls, and protective measures.
Not regulatory—but highly influential in shaping best practices.
2. Why CIBs Matter
They highlight hazards before they become widespread problems.
They often identify risks that OSHA standards don’t yet address.
They help organizations stay ahead of compliance and protect workers proactively.
They translate complex science into actionable guidance.
3. Examples of Topics Covered in CIBs
Nanomaterials and engineered particles
Diesel exhaust
Reproductive hazards
Carcinogens and updated cancer classifications
New chemical exposure limits
Biological hazards and infectious agents
CIBs often become the foundation for future regulations or consensus standards.
4. How Safety Leaders Should Use CIBs
Integrate them into hazard assessments and exposure monitoring plans.
Use them to justify stronger controls than outdated PELs require.
Train supervisors and workers on emerging risks.
Update written programs and purchasing decisions based on new intelligence.
Communicate findings to leadership to support proactive investment.
5. The Gap Between Science and Regulation
Dr. Ayers emphasizes that:
OSHA PELs are decades old and rarely updated.
CIBs reflect current science, not outdated limits.
Organizations that rely solely on OSHA standards may miss serious hazards.
CIBs help bridge that gap and protect workers more effectively.
Practical Takeaway
NIOSH Current Intelligence Bulletins are one of the most powerful tools for staying ahead of emerging hazards. They give safety leaders the scientific insight needed to protect workers before incidents occur and long before regulations catch up.
@theoccupationalsafetyleade8465

Feb 19, 2024 • 5min
Episode 120 - NIOSH Recommended Exposure Limits (REL)
Episode 120 digs into NIOSH Recommended Exposure Limits (RELs)—what they are, why they matter, and how they differ from OSHA’s regulatory limits. Dr. Ayers uses this episode to highlight a critical truth in occupational health: OSHA tells you what’s legal; NIOSH tells you what’s safe.
Core Message
NIOSH RELs are science‑based exposure limits designed to protect workers’ health—not to meet minimum compliance. They reflect current research, toxicology, and real‑world exposure data, making them far more protective than OSHA’s decades‑old PELs.
Key Points from the Episode
1. What NIOSH RELs Are
Non‑regulatory, science‑driven exposure limits.
Developed using toxicology, epidemiology, and modern industrial hygiene research.
Intended to prevent both acute and chronic health effects.
Often significantly lower (more protective) than OSHA PELs.
RELs represent best‑practice exposure guidance, not minimum standards.
2. Why RELs Matter
OSHA PELs are outdated—many haven’t changed since the 1970s.
New research often shows harm at levels below OSHA limits.
RELs help organizations protect workers even when regulations lag behind.
They support proactive hazard control and long‑term health protection.
Using RELs demonstrates a commitment to safety beyond compliance.
3. How RELs Are Developed
NIOSH evaluates:
Toxicology and dose‑response data
Epidemiological studies
Workplace exposure patterns
Long‑term health effects (cancer, sensitization, organ damage)
Technological feasibility of controls
The result is a limit designed to prevent all known health effects, not just the most severe ones.
4. RELs vs. OSHA PELs
RELs:
Based on current science
More protective
Updated as new research emerges
Non‑regulatory but highly respected
PELs:
Legally enforceable
Often outdated
Sometimes based on old technology or economic considerations
Dr. Ayers emphasizes that relying solely on PELs can leave workers exposed to harmful levels of chemicals.
5. How Safety Leaders Should Use RELs
Compare RELs to PELs when assessing risk.
Use RELs to guide ventilation, PPE, and engineering controls.
Incorporate RELs into written programs and exposure assessments.
Communicate to leadership why RELs matter for long‑term worker health.
Use RELs when selecting sampling methods (often paired with NIOSH methods).
Organizations that adopt RELs typically see fewer occupational illnesses and better control strategies.
Practical Takeaway
NIOSH RELs are one of the most powerful tools for protecting workers from chemical and airborne hazards. They reflect current science, not outdated regulations, and help safety leaders make decisions that truly safeguard long‑term health.

Feb 16, 2024 • 8min
Episode 119 - OSHA Permissible Exposure Limits
Episode 119 explains OSHA Permissible Exposure Limits (PELs)—what they are, why they exist, and why safety leaders must understand both their value and their limitations. Dr. Ayers emphasizes that PELs are the legal minimum, not necessarily the level that keeps workers healthiest.
Core Message
PELs are enforceable limits designed for compliance, not optimal health protection. They tell you the legal exposure threshold—not the safe one.
Key Points from the Episode
1. What OSHA PELs Are
Legally enforceable exposure limits for chemicals and physical agents.
Typically expressed as:
8‑hour Time‑Weighted Averages (TWA)
Short‑Term Exposure Limits (STEL)
Ceiling limits that must never be exceeded
Used during inspections and enforcement actions.
2. Why PELs Exist
Provide a uniform national standard.
Establish minimum requirements employers must meet.
Serve as the baseline for compliance sampling and regulatory action.
3. The Problem: PELs Are Outdated
Most PELs were created in the early 1970s.
Many do not reflect modern toxicology or updated health research.
Some PELs are significantly higher (less protective) than NIOSH RELs or ACGIH TLVs.
Relying solely on PELs can leave workers exposed to harmful levels of chemicals.
4. How PELs Are Used in Practice
Compliance monitoring
Regulatory inspections
Determining when engineering controls or PPE are required
Establishing minimum exposure‑control programs
5. Why Safety Leaders Must Look Beyond PELs
PELs may prevent citations but not necessarily illness.
More protective limits (RELs, TLVs) often better reflect current science.
Using only PELs can create a false sense of safety.
Proactive organizations compare PELs to more protective guidelines and choose the stricter value.
Practical Takeaway
OSHA PELs are the legal floor, not the safety ceiling. Smart safety leaders use PELs for compliance—but rely on more current, science‑based limits to truly protect workers.

Feb 12, 2024 • 21min
Episode 118 - Jack Springston - Introduction to Bioaerosols
Episode 118 brings in industrial hygiene expert Jack Springston to introduce listeners to the world of bioaerosols—tiny airborne biological particles that can cause illness, allergic reactions, and occupational disease. Jack breaks down what they are, where they come from, and why safety professionals need to understand them long before they become a problem.
Core Message
Bioaerosols are everywhere, and most workplaces underestimate them. Understanding how they form, spread, and impact health is essential for effective exposure control and indoor air quality management.
Key Points from the Episode
1. What Bioaerosols Are
Jack defines bioaerosols as airborne particles of biological origin, including:
Bacteria
Viruses
Fungi and mold spores
Pollen
Endotoxins and mycotoxins
Fragments of biological material
They range from visible mold spores to microscopic viral particles.
2. Where Bioaerosols Come From
Common workplace sources include:
Water damage and damp building materials
HVAC systems and cooling towers
Waste handling and composting operations
Agriculture and animal facilities
Healthcare environments
Manufacturing processes involving organic materials
Any place with moisture, organic matter, or human activity can generate bioaerosols.
3. Why Bioaerosols Matter
Jack highlights several health impacts:
Allergic reactions
Asthma and respiratory irritation
Hypersensitivity pneumonitis
Infections (depending on the organism)
Long‑term respiratory issues
Even non‑infectious particles can cause significant health problems.
4. How Bioaerosols Are Sampled
Jack explains that sampling is complex because bioaerosols:
Vary in size
Can be alive or dead
Are sensitive to temperature, humidity, and handling
Sampling methods include:
Spore traps
Culture plates
Impingers
Filters
Real‑time particle counters (for general particulate trends)
Interpretation requires expertise—numbers alone don’t tell the whole story.
5. Control Strategies
Effective control focuses on:
Moisture management and leak prevention
Proper HVAC maintenance
Filtration (HEPA where appropriate)
Housekeeping and sanitation
Engineering controls in high‑risk industries
Avoiding unnecessary disturbance of contaminated materials
Jack emphasizes that prevention is far easier than remediation.
Practical Takeaway
Bioaerosols are a hidden but significant occupational hazard. Jack Springston’s introduction makes it clear: understanding sources, sampling challenges, and control strategies is essential for protecting workers and maintaining healthy indoor environments.
@theoccupationalsafetyleade8465

Feb 12, 2024 • 7min
Episode 117 - Who should present New Hire Safety Orientation
Episode 117 tackles a deceptively simple question with big cultural impact: Who should actually deliver New Hire Safety Orientation? Dr. Ayers argues that the presenter matters just as much as the content—because the first safety message a new employee hears sets the tone for everything that follows.
Core Message
New hires decide whether safety is real—or just a slogan—based on who delivers the message. The orientation should be led by someone with credibility, authority, and genuine commitment to safety.
Key Points from the Episode
1. Safety Orientation Is Culture‑Setting
New hires are forming their first impressions.
The presenter signals what the organization truly values.
A weak or disengaged presenter sends the message that safety is optional.
2. Who Should Not Present It
Dr. Ayers is clear:
Don’t assign it to the newest safety person.
Don’t hand it off to HR by default.
Don’t treat it as a box‑checking task.
These choices undermine the seriousness of the message.
3. Who Should Present It
The ideal presenter is someone who embodies the organization’s safety expectations:
A senior leader or experienced safety professional who:
Speaks with authority
Understands the real hazards of the work
Can answer questions confidently
Shows genuine care for employee well‑being
Demonstrates that safety is a leadership priority
When a respected leader delivers orientation, new hires immediately understand that safety is non‑negotiable.
4. Why Leadership Presence Matters
It builds trust from day one.
It shows alignment between words and actions.
It reinforces that safety is everyone’s responsibility—not just the safety department’s.
It encourages new hires to speak up early and often.
5. The Presenter Sets Expectations
A strong presenter can:
Establish communication norms
Reinforce reporting expectations
Model the behaviors the organization wants
Create psychological safety for asking questions
This early influence shapes how new hires behave for months.
Practical Takeaway
New Hire Safety Orientation should be delivered by someone who represents the organization’s commitment to safety—not the person with the lightest schedule. When a credible leader sets the tone on day one, new employees understand that safety is a core value, not a compliance task.
@theoccupationalsafetyleade8465

Feb 5, 2024 • 5min
Episode 116 - Top 5 Excuses for Working Unsafely
Episode 116 digs into one of the most frustrating—and revealing—parts of safety leadership: the excuses people give for working unsafely. Dr. Ayers breaks down the five most common excuses, why workers use them, and how leaders can respond in a way that changes behavior instead of creating conflict.
Core Message
Unsafe actions rarely come from bad intentions. They come from rationalizations—stories people tell themselves to justify shortcuts. When leaders understand these excuses, they can coach more effectively and prevent incidents before they happen.
The Top 5 Excuses for Working Unsafely
1. “I’ve done it this way for years.”
This excuse is rooted in familiarity and routine. Workers assume past success guarantees future safety, ignoring how risk accumulates over time.
Leadership response: Reframe the conversation around probability, not history. Past luck is not a control.
2. “I didn’t have time.”
Production pressure is one of the biggest drivers of unsafe behavior. Workers cut corners when they feel speed matters more than safety.
Leadership response: Clarify priorities and remove mixed messages. Reinforce that safe work is efficient work.
3. “The right tools weren’t available.”
When equipment is missing, broken, or inconvenient, workers improvise. Improvisation often introduces new hazards.
Leadership response: Fix the system—not the worker. Ensure tools, PPE, and equipment are accessible and functional.
4. “I didn’t think it was that dangerous.”
Risk perception varies widely. Workers normalize hazards they see every day.
Leadership response: Use coaching and real examples to reconnect workers with the real consequences of the task.
5. “I didn’t want to bother anyone.”
Some workers avoid speaking up because they don’t want to seem difficult, slow things down, or challenge authority.
Leadership response: Build psychological safety. Make it clear that asking for help is a strength, not an inconvenience.
Why These Excuses Matter
They reveal gaps in training, communication, and culture.
They help leaders identify systemic issues—not just individual behaviors.
They provide coaching opportunities that build trust and improve hazard identification.
They show where the organization may unintentionally reward shortcuts.
Practical Takeaway
Excuses are clues. When leaders listen for the why behind unsafe actions, they uncover the cultural and operational issues that drive risk. Addressing these excuses with empathy and clarity leads to safer decisions and stronger teams.

Jan 31, 2024 • 7min
Episode 115 - Chemicals that are Skin Sensitizers
Episode 115 focuses on skin sensitizers—chemicals that can cause workers to develop allergic reactions after repeated or even a single exposure. Dr. Ayers explains why sensitizers are often underestimated, how they differ from irritants, and what safety leaders must do to protect employees from long‑term, irreversible health effects.
Core Message
Skin sensitization is not the same as irritation. Once a worker becomes sensitized, even tiny exposures can trigger severe reactions for life. Prevention is the only real control.
Key Points from the Episode
1. What Skin Sensitizers Are
Skin sensitizers are chemicals that can cause the immune system to overreact after exposure. Once sensitized, the body treats the chemical like a threat, causing:
Redness
Swelling
Blistering
Chronic dermatitis
Long‑term allergic reactions
This condition is permanent—workers don’t “heal out of it.”
2. Sensitizers vs. Irritants
Dr. Ayers highlights the critical difference:
Irritants cause immediate, predictable reactions based on dose.
Sensitizers cause immune‑based allergic reactions that can occur even at extremely low levels once sensitization has occurred.
This distinction is essential for hazard identification and control strategies.
3. Common Workplace Skin Sensitizers
Examples discussed include:
Epoxy resins
Isocyanates
Nickel and chromium compounds
Formaldehyde
Certain cleaning agents and disinfectants
Rubber accelerators
Fragrances and preservatives in personal care products
Many of these are found in manufacturing, construction, labs, healthcare, and maintenance work.
4. How Sensitization Happens
Sensitization can occur through:
Direct skin contact
Aerosols settling on skin
Contaminated surfaces or tools
Improper glove selection
Poor hygiene practices
Even small exposures can accumulate over time.
5. Prevention and Control Strategies
Dr. Ayers emphasizes prevention because sensitization is irreversible:
Substitute less hazardous chemicals when possible
Use proper gloves and protective clothing
Ensure good ventilation and housekeeping
Train workers on recognizing sensitizers
Implement strict hygiene practices (washing, no contaminated PPE in break areas)
Use Safety Data Sheets to identify sensitizers early
Supervisors must ensure controls are actually used—not just written in a program.
Practical Takeaway
Skin sensitizers can permanently change a worker’s life. Once sensitized, even trace exposures can trigger painful reactions. The best protection is early identification, substitution, and strict exposure control before sensitization occurs.
@theoccupationalsafetyleade8465


