CIRCADIAN® works with its partners to optimize performance and reduce the risks of our clients most vital asset – the 24/7 workforce.

AD OPT | DNV | Kronos | Qualcomm |



AD OPT is a leading provider of crew planning optimization solutions for the airline industry.

With more than 22 years experience in advanced optimization focused on airline crew planning, the AD OPT name represents innovation, progressive optimization technology, crew management expertise, and above all, personalized support.

Our core focus is to deliver customized solutions for the highly complex task of flight crew planning and scheduling for the world’s leading airlines.  Headquartered in Montreal, Canada, AD OPT is a division of Kronos Incorporated.



Det Norske Veritas (DNV)
is a global provider of services for managing risk, helping customers to safely and responsibly improve their business performance. As companies today are operating in an increasingly more complex and demanding risk environment, DNV’s core competence is to identify, assess, and advise on how to manage risk. Its technology expertise and industry knowledge, combined with its risk management approach, have been used to manage the risks involved in numerous high-profile projects around the world.

Organised as an independent, autonomous foundation, DNV balances the needs of business and society, based on its independence and integrity. With its objective of safeguarding life, property and the environment, DNV serves a range of industries, with a special focus on the maritime and energy sectors. Established in 1864, the company has a global presence with a network of 300 offices in 100 countries, and is headquartered in Oslo, Norway. Its prime assets are the knowledge and expertise of its 8,000 employees from 98 nations.

CIRCADIAN’s partnership with DNV brings decades of experience from high-risk and capital intensive industries, and advanced cross-disciplinary competence within management and technology to the challenge of 24/7 workforce management. Whether it concerns oil and gas installations, transportation systems, process facilities, ICT, food safety or patient safety, DNV working with CIRCADIAN can provide integrated risk management solutions to the global 24/7 workforce.


Kronos logo R 3C

is the global leader in workforce management solutions that enable organizations to control labor costs, minimize compliance risk, and improve workforce productivity. Its easy-to-own time and attendance, scheduling, absence management, HR and payroll, hiring, and labor analytics solutions and strategic services provide complete automation and high-quality information, and deliver the experience customers expect.

Kronos and CIRCADIAN® have partnered to offer a comprehensive fatigue risk management solution to help your organization reduce costs and minimize its risk of fatigue-related errors and accidents. This fatigue risk management strategy combines software solutions and consulting services to help you establish effective, automated schedules and diminish the risk of noncompliance.

Learn more about the Kronos-CIRCADIAN partnership.



FleetRisk Advisors, a business unit of Qualcomm, is a pioneer in providing predictive modeling solutions to the trucking industry. At FleetRisk Advisors, we believe that Accidents Don’t Happen By Accident™. Behavioral trends exist and can be found in every trucking fleet’s daily operational data. With the use of predictive modeling, FleetRisk Advisors can identify those drivers that may cause your fleet to be most at risk.

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Contact Information
Phone: 1.800.284.5001
Local: 1.781.439.6300


Circadian Headquarters
2 Main Street, Suite 310
Stoneham, MA, 02180, USA