About OSI - Occupational Services, Inc.

WHY CHOOSE OSI?

WE STAND OUT

OSI stands out from other consulting firms because of its ability to deliver comprehensive, end-to-end Environmental, Health, and Safety (EHS) solutions tailored to each client’s unique operational needs. Unlike firms that specialize in only one niche area, OSI combines deep technical expertise across industrial hygiene, health physics, biological safety, and safety engineering with practical, client-focused strategies that reduce risk and streamline compliance. With experienced professionals strategically located in San Diego, San Francisco, Seattle, Austin, and Boston, OSI provides local insight backed by national reach. The firm’s integrated approach—supported by proprietary tools, proven methodologies, and decades of regulatory experience—ensures clients receive efficient, cost-effective, and sustainable outcomes that consistently exceed expectations.

OUR HISTORY, TEAM & COMPANY VALUES

Founded in 1988, OSI has built a reputation as a trusted partner in Environmental, Health, and Safety (EHS) consulting. For more than three decades, we’ve helped organizations across biotechnology, pharmaceuticals, manufacturing, and other industries navigate complex regulatory requirements with confidence and efficiency. Our team of experienced professionals—specialists in industrial hygiene, health physics, biological safety, and safety engineering—brings both technical expertise and practical solutions to every project. Guided by our core values of integrity, excellence, and partnership, OSI is dedicated to protecting people, safeguarding the environment, and supporting our clients’ long-term success.

OUR TECHNICAL EXPERTISE & CERTIFICATIONS

OSI’s strength lies in the depth and breadth of its technical expertise, delivered by a multidisciplinary team of highly credentialed professionals. Our staff includes Certified Industrial Hygienists (CIHs), Certified Safety Professionals (CSPs), Certified Health Physicists (CHPs), Certified Professional Ergonomists (CPEs), Professional Engineers (PEs), and NSF-accredited Ventilation Technicians, among others. This diverse range of certifications ensures that we can address the full spectrum of Environmental, Health, and Safety (EHS) challenges with precision, credibility, and proven industry standards. By combining specialized technical knowledge with practical, real-world experience, OSI provides clients with innovative solutions that not only meet regulatory requirements but also enhance workplace safety, efficiency, and overall organizational resilience.

WHAT SETS US APART

What truly sets OSI apart from other consulting firms is the stability, experience, and culture of our team. With exceptionally low employee turnover, clients benefit from long-term relationships with trusted experts who deeply understand their operations and needs. Our staff brings decades of collective experience across a wide range of disciplines, allowing us to provide not only technical excellence but also practical, integrated solutions that few firms can match. Beyond our expertise, OSI fosters a positive, collaborative culture that emphasizes responsiveness, clear communication, and partnership. This unique combination of seasoned professionals, breadth of services, and a team-oriented approach ensures our clients receive consistent, high-quality results and a seamless consulting experience.

INDUSTRIES WE SERVE

OSI proudly serves a wide range of industries, bringing specialized Environmental, Health, and Safety (EHS) expertise to organizations with complex operational needs. Our clients include research laboratories, pharmaceutical manufacturing facilities, medical centers, and pharmacies, where safety and compliance are critical to protecting people and advancing innovation. We also partner with manufacturing, aerospace, and technology companies, helping them manage risk, streamline operations, and maintain regulatory compliance in dynamic environments. Beyond industry, OSI supports government agencies, educational institutions, and property management organizations, delivering tailored solutions that safeguard communities and strengthen workplace safety. This broad experience enables us to understand the unique challenges of each sector and provide practical, effective strategies that drive lasting results.

OUR SERVICES

Health & Safety

Ventilation Services

Radiation Safety

OUR COMPANY VALUES

At OSI, our core values shape every aspect of how we work and serve our clients. Integrity is the foundation of our approach, ensuring honesty and transparency in all interactions. We strive for excellence by holding ourselves to the highest professional and technical standards, delivering reliable solutions that clients can trust. Through collaboration, we partner closely with our clients and foster teamwork within our organization to achieve shared success. We embrace accountability, taking full responsibility for our work, decisions, and outcomes. And we uphold a culture of respect, valuing the people we work with and creating an environment built on trust, inclusivity, and care. Together, these values define OSI’s commitment to protecting people, safeguarding the environment, and supporting our clients’ long-term success.