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Lab Assistant I

Req ID #:  41886

Horsham, PA, US, 19044

For 70 years, Charles River employees have worked together to assist in the discovery, development and safe manufacture of new drug therapies. When you join our family, you will have a significant impact on the health and well-being of people across the globe. Whether your background is in life sciences, finance, IT, sales or another area, your skills will play an important role in the work we perform. In return, we’ll help you build a career that you can feel passionate about.



Job Summary

Perform basic laboratory and record-keeping tasks. Support the functions of the in-life, necropsy and formulation/analytical groups.



  • Education:  High school diploma or General Education Degree (G.E.D.).
  • Certification/Licensure:   Must have valid, state-issued, driver’s license.
  • Other:  Must be detail-oriented and have general familiarity with lab procedures.  Good verbal communication skills required. Basic computer skills; familiarity with Microsoft Office software.



  • Employees must be able to regularly lift, move, manipulate, and/or hold animals and heavy objects up to and including 50 pounds; this includes work materials, equipment, and/or supplies.
  • Must be able to regularly push wheeled carts weighing up to 1200 pounds on a repetitive basis each day over distances of approximately 1- 100 feet.
  • Must be able to perform procedures, which require standing or sitting for long periods of time.
  • Must be able to regularly move about the facility to access file cabinets, office machinery, and other buildings.
  • Regularly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.
  • Regularly uses laboratory instruments. 
  • Must be able to work in narrow spaces.
  • Must be able to wear safety equipment (PPE), as needed, according to OSHA regulations and company standards.
  • Must be able to regularly stoop, bend, kneel, stand or reach up with hands and arms to manipulate objects on shelves from one and one-half to six and one-half feet above the floor on a repetitive basis each day.
  • Specific vision abilities required by this job include close vision, color vision, depth perception, and the ability to adjust focus.
  • Must be able to communicate with employees, exchanging accurate information.
  • Must regularly move about inside the facility to access supplies which may require going up and down stairs.


About Safety Assessment
Charles River is committed to helping our partners expedite their preclinical drug development with exceptional safety assessment services, state-of-the-art facilities and expert regulatory guidance. From individual specialty toxicology and IND enabling studies to tailored packages and total laboratory support, our deeply experienced team can design and execute programs that anticipate challenges and avoid roadblocks for a smooth, efficient journey to market.  Each year approximately 120 investigational new drug (IND) programs are conducted in our Safety Assessment facilities.

About Charles River
Charles River is an early-stage contract research organization (CRO). We have built upon our foundation of laboratory animal medicine and science to develop a diverse portfolio of discovery and safety assessment services, both Good Laboratory Practice (GLP) and non-GLP, to support clients from target identification through preclinical development. Charles River also provides a suite of products and services to support our clients’ clinical laboratory testing needs and manufacturing activities. Utilizing this broad portfolio of products and services enables our clients to create a more flexible drug development model, which reduces their costs, enhances their productivity and effectiveness to increase speed to market.

With over 11,000 employees within 70 facilities in 18 countries around the globe, we are strategically positioned to coordinate worldwide resources and apply multidisciplinary perspectives in resolving our client’s unique challenges.  Our client base includes global pharmaceutical companies, biotechnology companies, government agencies and hospitals and academic institutions around the world. And in 2016, revenue increased by 23.3% to $1.68 billion from $1.36 billion in 2015.

At Charles River, we are passionate about our role in improving the quality of people’s lives. Our mission, our excellent science and our strong sense of purpose guide us in all that we do, and we approach each day with the knowledge that our work helps to improve the health and well-being of many across the globe. We have proudly supported the development of ~70% of the drugs approved by the FDA in 2016.

For more information, please visit

Charles River Laboratories, Inc. is an Equal Opportunity Employer M/F/Disabled/Vet

Nearest Major Market: Philadelphia

Job Segment: Laboratory, Toxicology, Biotech, Lab Assistant, Pharmaceutical, Science