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CHR is the company you call for quality, personalized, and cost-effective corporate health examination and service needs. 
CHR is here, there, everywhere...

"The Industry Leader in Occupational Health Since 1986!"

White Glove Service is Our Standard of Care

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CHR has earned the respect of Fortune 1000 companies with expertise you can trust.

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(800) 867-0933


1375 Piccard Drive

Suite 275

Rockville, MD 20850

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Training Courses

AAOHN: Respiratory Protection Education Program for Healthcare Workers - Available at No Charge.

Online Learning



Commercial Driver Medical Examiner Online Training via ACOEM




Spirometry, Spirometry Refresher, Respirator Fit-Testing Training Courses


Online Courses:

Spirometry Refresher

Spirometry Training


More Information:

Dr. Mary Townsend



CAOHC Certification
CAOHC Re-Certification
NIOSH Certification


Course Collections:



The DOT Examiner's Most Trusted Resource! For a full listing of our books visit OEM Press.

Medlock Consulting is a physician search firm dedicated to locating, evaluating, and facilitating the placement of quality physicians in superior environments. To us, this means never taking shortcuts and always maintaining professional and personal integrity.


Nyla Medlock

Medlock Consulting

Phone 806-744-5250

Cell 806-239-NYLA(6952)

"Defining the Future of Physicians Globally"

Email Nyla


International Safety Systems, Inc. (Global EHS Service Provider)
New: Webinar Brochure



Occupational Health Connections, Inc. (OHC) is a distinguished leader in occupational and employee health staffing and recruitment. For job opportunities, please visit: OHC website



Visit Relief EHS, LLC
Relief EHS is uniquely qualified to provide answers to your environmental health & safety (EHS) questions, make it easier for your business to comply with regulations, and help you achieve EHS goals while minimizing costs and potential liability.



PKB Consulting, LLC
Patricia K. Bertsche, PhD, FAAOHN - Occupational Health & Wellness Consultant, Leader in Global Occupational Health Program Development & Evaluation - Email Pat



CHR Newsletter - October 4, 2018

The quality of CHR's services and the services provided by the clinics in our network is very important. Thank you for your feedback and support. Our clients say it best...

"We do so appreciate your support with this funding over the years. You have been a real friend of Occupational Health and Environmental Nurses for a long time."
-AAOHN Foundation

Environmental Probiotics: Creating Healthy Indoor Workspaces

Indoor environments have been shown to have a significant impact on human health and productivity. The demand for green cleaning services is creating a culture of sustainability in the commercial office cleaning industry and influencing building maintenance practices.

5-Star Promise: Hotel Industry Pledges to Improve Worker Safety

The American Hotel and Lodging Association and five major corporations have announced their commitment to improve employee safety in the industry, including measures designed to prevent and respond to sexual harassment and assault.

Reducing Stress in the Workplace

Americans in some industries still are feeling the psychological and physical effects of a negative work environment. How can companies improve workplace conditions to reduce the issues caused by a stressed workforce?

NIOSH Identifies Workers Most at Risk for Hearing Loss and Tinnitus

Most employers are aware that occupational noise has the potential to cause permanent hearing loss in exposed workers. Less well known, and less studied, is the link between occupational noise exposure and tinnitus. A study from NIOSH looks at both conditions.

Drop that Donut: Workers Consuming 1,000 Extra Calories at Work

Bagels and donuts during the breakfast meeting. Cake for birthday celebrations. Consuming extra food is a common occurrence for many workers. But before you grab that free donut, know this: Workplace snacks may be adding more than 1,000 calories to your daily diet.

October is National Protect Your Hearing Month

During this year's National Protect Your Hearing Month - observed each October - learn how to protect yourself, your family and co-workers from noise-induced hearing loss (NIHL).

More Than Two-Thirds of Employees Are Tired at Work

A majority (90 percent) of employers reported feeling the effects of fatigue on their workplace, including declines in productivity and safety incidents involving tired employees, but only 72 percent of employees saw being tired as a safety concern.

Adults Need a Regular Bedtime, Too

Adults who have a regular bedtime are likely to weigh less than those who don't, to have lower blood sugar and to face a lower risk of heart disease and diabetes, according to a U.S. study.

Occupational Health Research Roundup: September 2018

Stories include return to work after common mental disorders, outcomes in self-employed cancer survivors, and chronic illness and workplace adjustments.

Upcoming Conferences

  • MARCOEM, Oct. 6-7, 2018
  • NCAOHN, Oct. 31-Nov. 2
  • MAOHN, Nov. 1-2, 2018
  • OAOHN, Nov. 1-3, 2018
  • NECOEM/MaAOHN, Nov. 29-30, 2018
  • LAOHN, July 24-26, 2019
  • More to come; Stay tuned...

Job Openings

Occupational Health Triage Call Center Lead Nurse (Night Shift Preferred)

CHR is seeking an experienced Occupational Health Registered Nurse to help establish and lead a telephone triage call center. For further information, please contact

WBENC-Certified Women's Business Enterprise

Email Rhett Suhre for More Information.

CHR is Celebrating 32 Years!

CHR is a TRAC-Certified Vendor
Learn more about TRAC

Health and Safety Works, LLC

Health and Safety Works, LLC provides training, consulting, and research services in support of Occupational Health (OSHA), Transportation Health (FMCSA) and Health and Wellness. Read more about Health and Safety Works or email HSW Founder and CEO, Elaine M. Papp RN, MSN, CM, COHN-S FAAOHN.