Theresa Y. Schulz, Lt. Col. U.S. Air Force (retired) Ph.D.

Dr. Theresa Y. Schulz is the hearing conservation manager for Honeywell Safety Products, manufacturer of Howard Leight® hearing protection products (, She is a past president and has been an active member of the National Hearing Conservation Association [NHCA] for 30 years. Dr. Schulz served in the U.S. Air Force for over 20 years as an audiologist.


Sound reasons: Preventing hearing loss

Hearing — and our ability to listen — defines our relationships and shapes our personalities.

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What hearing protection regulations are on the horizon?

In the United States, hearing conservation regulations are promulgated by governmental authorities such as OSHA, the Mine Safety and Health Administration (MSHA), and other agencies, depending on jurisdiction.

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Managing music volume at work: Implement a personal listening device policy

Personal listening devices (PLDs) have become ubiquitous.

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Empower workers against overexposure

Fit-test earplugs as a training tool
Research has shown that worker self-efficacy is an important factor in the use of hearing protection.

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Case study: VeriPRO ear plug fit testing at Shaw Industries

There are many challenges in managing occupational Hearing Conservation Programs: Fit, Selection, Protection, and Motivation. Environment may also be a major factor, such as at Shaw Industries Group, Inc., the world’s largest carpet manufacturer and a leading floor covering provider.

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Pick the right plug

Fit testing optimizes earplug selection
How do both safety manager and worker select the “best” earplug for the job?

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Military tactics for hearing conservation

Best practices you can apply to your program
As soldiers return from active combat in Iraq and Afghanistan, both the U.S. Department of Defense (DoD) and Veterans Administration (VA) have seen a significant increase in hearing damage, tinnitus and hearing loss compensation claims of active-duty soldiers and veterans — to the tune of $1.1 billion.

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Recording workers’ hearing loss

Your focus should include leading indicator
Although it is physically an injury to the hair cells of the inner ear, noise-induced hearing loss (NIHL) is considered and documented as an illness by OSHA. This article examines noise-induced hearing loss as both an injury and illness, and looks at ways to use leading indicators to prevent occupational hearing loss.
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There's no excuse: Managing hearing-impaired or deaf workers

It is a misconception that hearing-impaired or deaf workers do not have to participate in a hearing conservation program. Like those with normal hearing, these workers still fall under OSHA, MSHA and FRA regulations for occupational noise exposures.
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Hearing conservation for vets returning to work

One issue facing veterans returning to or joining the workplace is hearing loss or tinnitus due to the noise hazards of the military.
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Image Galleries

Scenes from the World of Safety

Sights, signs & symbols from the National Safety Congress & Expo held in San Diego, CA, September 15-18

12/11/14 11:00 am EST

Why Flame Resistant Workwear? Understanding Workplace Hazards and OSHA Compliance

By defining the leading causes of flash fires, electric arc and molten metal splatter, we will address the ways in which companies can better protect their employees from such hazards through proper staff outfitting. In the topic, we will discuss the benefits of – and recent developments to – flame-resistant workwear and what to consider when creating a program for your employees.

ISHN Magazine


2014 December

Check out ISHN's last issue of the year, which features articles about distance learning, foot protection and confined space.

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Safety Engineering, 4th Edition

A practical, solutions-driven reference, Safety Engineering, 4th edition, has been completely revised and updated to reflect many of today’s issues in safety.

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For Distributors Only - SEPTEMBER 2014

ISHN FDO SEPTEMBER 2014For Distributors Only is ISHN's niche brand standard-sized magazine supplement aimed at an audience of 2,000 U.S. distributors that sell safety products. Circulation only goes to distributors. CHECK OUT THE SEPTEMBER 2014 ISSUE OF FDO HERE


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ishn infographics

2012 US workplace deathsCheck out ISHN's new Infographic page! Learn more about worker safety through these interactive images. CLICK HERE to view the page.