Client Testimonials

What clients are saying

As a Start-Up Biotech Company in Southern California, getting "Operational" with limited resources is difficult. Safety and Compliance quickly become a priority and an obstacle that can be difficult to overcome with the inherent Hazards that accompany a BSL II Research Lab. Without the help of the OSI Team, it simply would not have been possible to be up and running as fast as we did.  More than 6 years later, we continue to partner with OSI for EHS Support for our growing company. I just don't know where we would be without the guidance and help from OSI. I would recommend them to any company that is treading the waters of Safety and Compliance!
Phillip Lukas
Facilities & EHS Senior Director

It was a great pleasure working with the OSI team on projects to vacate a couple facility locations due to relocation and/or wind down.  They have in house EH&S experts to help us through the equipment decontamination, waste removal, facilities disinfection, and closure of city permits/licenses.   We also appreciate the professionalism of all the team members that we met/worked with.  They worked closely with us to meet our timeline and you can count on them getting things done and done in the right way.
Stella Ng
Associate Director, Facilities, Utilities and Engineering

We have partnered with Occupational Services since our earliest days as a small biotech company, and they have been nothing short of exceptional. They helped us establish a comprehensive EH&S program that meets all relevant regulatory requirements, while also providing training and thorough workplace safety assessments. They are our go-to team for any decontamination work during company relocations. The entire team is extremely friendly, responsive, knowledgeable, and detail-oriented. We are truly grateful for their services and highly recommend them.
Xin Du
CEO

I have worked with OSI steadily for almost 6 years now, and at this point I wouldn’t consider working with any other EHS consultants. They are responsive and knowledgeable, and never miss an email or a phone call, which makes communication easy and efficient even when discussing complex concepts. Our OSI consultants are highly detail oriented and ensure that every potential element of the matter at hand is considered, and that I (as the customer) have a complete understanding of the situation or solution. Essentially, they educate their customers about the finer points of EHS regulations, as opposed to just handing you the solution (although they’ll do that too if you ask them to).  In the time that I’ve worked with OSI, they’ve taught us a tremendous amount about EHS management. That’s super valuable to smaller companies like ours because it builds internal know-how. They don’t just provide a service; they teach you how to perform that function yourself.
Peter Hine
Facilities and Maintenance Manager

OSI has provided excellent services to us over the last 4 years.  They contributed to the success of the initial setup of the laboratory.  Over the years, they have continued to support us through self-inspections and preparing for regulatory bodies to inspect us.  I highly recommend OSI to others to provide EH&S services and training.
Larry Johnson, PhD, MSc, MB(ASCP)CM
Director, Lab Operations

OSI has been an integral partner since the early days of our company and the experience has been exemplary. As the company’s grown, OSI has repeatedly shown the ability to know and anticipate our needs while keeping us compliant with the most current regulations. Importantly, they are flexible, efficient, and responsive. Their breadth of offerings is also impressive as we’ve received consultation and services ranging from chemical and biological safety, to radiation safety, lab decommissioning, site assessment, and equipment certification. They are a unique company in their professionalism, efficiency, and friendliness. I would not hesitate to work with OSI in the future and would highly recommend them.”
Mike Poon
Vice President Biology

It has been an absolute pleasure to work with the professionals at Occupational Services, Inc. From routine compliance audits to developing custom safety programs, OSI consistently delivers turnkey, state-of-art EHS services for our facility. OSI’s consultants are friendly and responsive, and leverage decades of cross-functional experience to ensure our team members stay safe at work.  Looking forward to continuing our partnership with OSI as we navigate our industry’s dynamic regulatory environment!
Tyler Diefenbach
Environmental, Health, & Safety Manager

I have worked with OSI for many years, even when my role or company has changed.  I have brought them in for EHS support.  OSI consistently delivers high-quality EHS services. They are reliable, responsive, and always prioritize our needs.  They work hard to understand our goals and objectives and are open to providing services in the best possible way.  OSI partners with us to support our initiatives, and plan for Safety and Regulatory compliance.  They have numerous resources and can support all our EHS initiatives.  I am still highly pleased and thankful to partner with OSI, and hope to continue in the future.
Todd Taylor
Director of Operations

OSI has played a critical role in helping us achieve EH&S compliance as a startup and have supported us seamlessly as we’ve grown.  From managing our compliance calendar and completing quarterly safety inspections to preparing annual safety training and maintaining our permits, their expertise has ensured we meet all regulatory requirements. Their proactive approach and attention to detail have provided us with peace of mind and allowed us to focus on scaling our business.  We highly recommend OSI to any organization seeking reliable and comprehensive EH&S support.
Michael Brown
Director of Research Operations

OSI made it easy to establish lab and facility safety processes while we were initially setting up lab operations, which ensured we were compliant with regulations and operating safely from day 1. They were like an extension of our staff, and always there to deal with issues, inspection readiness and educating our staff. I wouldn’t hesitate to recommend them.
Mark Fielden
SVP Nonclinical Development, Biotech startup

The staff at OSI are extremely knowledgeable, professional, and friendly. We currently use the company for safety consulting including; Quarterly onsite walkthroughs, Workplace Violence Prevention, Respiratory Protection, Injury and Illness Prevention Plan, Chemical Hygiene and Biosafety. We have consulted with them on B-Virus exposure training, as well as Radiation Safety. In addition to this, OSI does our annual laboratory equipment certifications, allergen exposure monitoring, as well as noise and vibration testing. That’s not all, they assist with our hazardous and medical waste management plan and proper reporting of these items. OSI is a multi-talented company with staff that are always willing to help, have excellent communication, and outstanding customer service. I would recommend OSI to anyone who is looking for assistance with their Occupational Safety and Health needs.
Jason Wooldridge
Vivarium Operations Manager
Radiation Safety Officer, CHO, BSO

I am beyond impressed with the level of service we received from OSI. This team is highly professional and very responsive to our EH&S needs. Your company will not only become safe for your employees and visitors but will also be 100% compliant for any safety audits. Their EH&S trainings are easy to use and custom to your company and affordable. I highly recommend using OSI!
Jenn Campbell
Business Operations Associate Director

We have been working with Occupational Services, Inc. for over 20 years, and they have consistently provided us with top-notch support in environmental regulations. Their team is not only knowledgeable but also proactive in ensuring that we stay ahead of compliance deadlines and best practices.

We trust Occupational Services, Inc. to guide us through the intricacies of environmental compliance with expertise and efficiency. Their ongoing support gives us peace of mind knowing that we are in full compliance with all regulatory requirements.

Special thanks to H. Scott Tillinghast. He is a Senior EHS Consultant. His attention to detail and the care he puts into each project is exceptional.  He is such a professional, knowledgeable, responsible and intelligent person. Our company is so lucky to have Scott provide EHS services to our company during all these years.
Stella Kaplun
Shipping Associate, Logistic Department

As a lab manager, I cannot overstate the value of working with OSI. Their expertise has been instrumental in identifying potential safety risks and ensuring our compliance with local regulatory standards. They provided tailored solutions to improve our workflows while prioritizing the health and safety of our team. Thanks to their guidance, we’ve streamlined safety protocols and cultivated a culture of responsibility and awareness in the lab. Partnering with an OSI has been a great partnership and I look forward to working with them to keep my team safe in the future.
Megan McMaster
Lab Operations Manager

I first reached out to Occupational Services, Inc  (OSI) in 2018 for a facility safety assessment. I was so pleased with how professional and supportive they were in answering all my questions and helped us establish our laboratory and offices to be compliant with building codes, permits and county health regulations.

We relied on OSI during our major remodeling when the San Diego County Air Pollution Control District (APCD) required asbestos survey report. OSI provided the report and followed up with the stamped Hazardous Materials Questionnaire (HMQ) assisting the Architect with the required paperwork without causing any delays.

I owe all my knowledge on Laboratory Safety to OSI and even got compliments on compliance from San Diego Hazardous Materials Division (HMD) during inspections.

James Tillinghast is a pleasure to work with, always available to support our needs and provides expert opinions and advice. He takes the initiative to remind me of permit due dates and inform me on new regulations to avoid violations and always be compliant.

Whether you are looking for safety training, laboratory assessment or permits requirements OSI will offer the support you need!
Latifa Hassaine
Staff Scientist and Lab Manager

I use OSI for my safety needs because they know the OSHA regulations and keep our lab compliant with new regulations as they are initiated. OSI safety inspections catch small issues that we would miss otherwise, which has saved our organization from multiple violations. OSI is and will remain a critical part of my team!
Richard Thomas
Chief Scientific Officer

I've been consistently impressed with the reliable, flexible, and high-quality cleanroom certification work performed by Gary Adams, Ricky Crawford, and the OSI team. They are always willing to go the extra mile and their communication is excellent. They have my highest recommendation.
Sam Martinez, PharmD, BCOP
Outpatient Infusion Pharmacy Manager

Working with OSI over the past four years has been fantastic. Your team’s support has made a huge difference in keeping our workplace safe and compliant.
Jorge Chirinos
Manager, Operations Readiness and Planning

I transitioned to OSI Services several years ago and have had an exceptional experience. Their cleanroom team demonstrates reliability, professionalism, and a strong attention to detail. I appreciate their ability to identify potential areas for improvement and would like to commend their industrial hygienist for providing consistently valuable advice and recommendations.
Lina Amcheslavsky Pharm.D., BCOP
Pharmacy Manager

Testing and certification of the cleanroom are required to ensure your cleanroom functions properly, and it begins with working with the team you trust to guide your facility to comply with regulations. I struggled with the previous cleanroom certifier until I met Gary Adams in 2017, and I have worked with his team ever since. Gary and his team at OSI have been an integral part of our health system as we brought up multiple sterile compounding areas. They have been a partner during our facilities' construction phase and certification. They are accessible and responsive to our needs and never leave us hanging, as they understand that downtime has a negative impact on patient care. Their testing equipment is spotless, as they know the value of maintaining sterility. To achieve and maintain high quality, one needs to start with quality; Gary and his team are the ingredients to help us get there.
Daniel Hoang, PharmD, BCOP, BCSCP
Infusion Pharmacy Manager

Our site has relied on OSI for many years, and I have worked directly with them the last 5. From the routine to the reactive, the OSI team has been amazing to work with providing timely, accurate and flexible services when needed.

Our site has a large number of services to manage; many on different offsets, and the OSI team has been crucial for our non-stop operation. We couldn’t have done it without them, and they carry my highest recommendations as a service vendor.
Mitchell Travis
Tech, Biomedical Equipment II – Metrology
QMS – Silver Certified