Circadian

What Circadian does

CIRCADIAN Technologies, Inc. is a privately held consulting and software company founded in 1983 and headquartered in Stoneham, Massachusetts, specializing in 24/7 workforce performance and safety solutions. The company serves enterprise clients across at least eleven verticals — including food manufacturing, energy and utilities, aviation, mining and metals, discrete and process manufacturing, pharmaceuticals, healthcare, surface transportation, and government — with named customers spanning 3M, Siemens, Toyota, Mazda, Mars, Procter & Gamble, ADM, McCain, Eli Lilly, Moderna, Bayer, Thermo Fisher, DSM, National Grid, DHS, and others. The company claims to serve over half of the Fortune 500 and maintains an email community of 32,000+ industry leaders.

The company's core technology is the Circadian Alertness Simulator (CAS), a cloud-based (SaaS) biomathematical fatigue risk model that converts work and rest schedule data into a fatigue risk score on a 0-100 scale, classified into green/yellow/red risk zones. CAS uses a three-process model combining homeostatic factors, circadian factors, and sleep inertia, and has been continuously optimized for 25+ years against real-world incident, error, and accident data from diverse operational settings. The intellectual property has been protected by multiple patents since 1993. Supporting software includes the Schedule Risk Analyzer (online compliance and fatigue analyzer) and FACTS accident-incident analysis software. The company also offers the F.A.T.I.G.U.E. framework guide and the Shift Schedule Fatigue Risk Scorecard as free assessment tools.

CIRCADIAN generates revenue through four primary streams: (1) consulting services in shift scheduling optimization, fatigue risk management systems (FRMS) implementation, risk and cost assessment, education and training programs, and expert witness testimony for litigation involving human fatigue impairment; (2) usage-based SaaS subscriptions for the CAS Fatigue Risk Model, priced by operation size and number of reports run monthly, with annual prepay discounts; (3) one-time publication sales through the CIRCADIAN Store e-commerce platform; and (4) online training subscriptions (Fatigue Training Online). Go-to-market is primarily enterprise field sales augmented by content marketing (blog, white papers, case studies, webinars, tools) and a self-serve SaaS channel (WebCAS). Custom enterprise pricing requires direct contact, and the company maintains wholly-owned subsidiaries including the CIRCADIAN Light Research Center, the CIRCADIAN Store, and CIRCADIAN Eyewear (bluesafe24.com).

Name

Circadian

Legal name

CIRCADIAN Technologies, Inc.

Website

https://circadian.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

51–100 employees

Short description

CIRCADIAN Technologies, founded in 1983 and headquartered in Stoneham, Massachusetts, is a privately held consulting and software firm providing 24/7 workforce performance and safety solutions — anchored by its patented CAS biomathematical fatigue risk model — to enterprise clients across manufacturing, energy, transportation, pharmaceuticals, aviation, mining, and healthcare globally.

Ownership category

akta.pro rank

Product category

Fatigue Risk Management & Shift Work Consulting

akta.pro primary industry

Time, Attendance & Scheduling Administration (BPACAIAE)

akta.pro secondary industry

Sleep Health Coaching (HSADAGAE)

Keywords

• Fatigue risk management
• Shift scheduling software
• 24/7 workforce consulting
• Biomathematical fatigue modeling
• Shift work training

Headquarters

HQ city

Stoneham

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Consulting Services: CIRCADIAN provides consulting expertise in scheduling, staffing, training, and risk management of 24/7 workforces. Services include shift scheduling optimization, fatigue risk management systems implementation, risk and cost assessment, education and training programs, and expert witness testimony for litigation involving human fatigue impairment.
2. Software Subscriptions (CAS Fatigue Risk Model): The CAS Fatigue Risk Model is a cloud-based (SaaS) subscription product. Pricing is usage-based — determined by operation size and number of CAS fatigue risk reports run each month. Subscriptions are available on a monthly basis or with discounts for annual subscriptions paid in advance.
3. Publications and Reports: CIRCADIAN's award-winning publications and reports covering shift scheduling, fatigue risk management, and 24/7 workforce optimization are sold through the CIRCADIAN Store. Publications include white papers, reports, and guides on topics such as 12-hour shift advantages/disadvantages, shiftwork lifestyle training, and production beyond the five-day operation.
4. Online Training Programs: Fatigue Training Online programs are offered for shift workers and supervisors, providing structured fatigue management education to help employees manage fatigue, improve safety, and maintain high performance levels.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels10 records

Core offering

CIRCADIAN provides consulting, software, and training solutions for organizations that operate 24/7 shift-work operations. Its core deliverables are expert advisory services (shift scheduling, Fatigue Risk Management Systems, risk and cost assessment, corporate sleep programs, expert witness testimony) and the proprietary CAS biomathematical fatigue risk modeling platform, supported by industry-specific education, online training, and published research.

Product overview

CIRCADIAN is a consulting and software company offering a comprehensive suite of 24/7 workforce performance and safety solutions. The portfolio includes consulting services (Shift Scheduling, Fatigue Risk Management Systems, Risk & Cost Assessment, Education & Training, Corporate Sleep Programs, Human Fatigue Expert Witness Testimony, Best Practices, and Emergency Services Scheduling) supported by software products including the CAS (Circadian Alertness Simulator) biomathematical fatigue risk model, Schedule Risk Analyzer, FACTS accident-incident analysis tool, and Fatigue Training Online platform. The company also provides white papers, publications, workshops, and assessment tools. Founded in 1983, CIRCADIAN serves industries including food manufacturing, energy, aviation, mining, pharmaceuticals, healthcare, transportation, and manufacturing.

Differentiator

Problem solved

Functional benefit

Products and services

• CAS (Circadian Alertness Simulator) Subscription-based SaaS that predicts operator fatigue risk across proposed and actual shift schedules using a proprietary biomathematical model; outputs a 0-100 Fatigue Risk Score with Risk Zone classifications, Risk Probability Curves, and aviation-specific modeling for Fortune 500 24/7 operators.
• FACTS Accident-Incident Analysis Software tool that supports accident-incident analysis in 24/7 shift-work operations, used to assess and document fatigue-related root causes as part of customer FRMS programs.
• Schedule Risk Analyzer Online shift-schedule analysis tool that scores fatigue risk of an existing or proposed roster, supporting schedule optimization decisions for 24/7 workforces.
• Shift Scheduling Consulting Professional consulting engagement in which CIRCADIAN's experts design, evaluate, and optimize shift schedules for 24/7 facilities, often combined with CAS modeling to balance coverage, safety, performance, and cost.
• Fatigue Risk Management Systems (FRMS) Implementation End-to-end consulting engagement that implements a globally-accepted Fatigue Risk Management System framework, integrating CAS modeling, policies, training, and incident analysis for enterprise 24/7 operators.
• Risk & Cost Assessment Consulting Consulting engagement that assesses the financial cost and risk of current shift-work operations, building a business case (typical 12-month payback) for fatigue mitigation investments.
• Human Fatigue Expert Witness Testimony Specialist legal consulting service providing expert testimony on human fatigue in litigation involving 24/7 shift-work accidents, incidents, and hours-of-service disputes.
• Corporate Sleep Programs Education and training program for employees and managers at 24/7 operations covering sleep hygiene, alertness strategies, and fatigue mitigation.
• Fatigue Training Online Subscription online training platform that delivers modular fatigue management training to shift workers and managers across 24/7 operations.
• Management Shift Scheduling Workshops Workshop-format training engagement for managers, schedulers, and operations leaders covering shift-work scheduling and staffing best practices for 24/7 workforces.
• Publications & Reports (CIRCADIAN Store) Catalog of purchasable publications, white papers, case studies, and reference reports on shift-work scheduling, fatigue, and 24/7 workforce performance sold via the CIRCADIAN Store.

Quantifiable outcome

• 32% reduction in accident rates
• +5 more outcomes

Named customers24 records

Segments11 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Shiftboard: Shiftboard provides shift scheduling and workforce management software for shift-based industries including healthcare, manufacturing, and transportation, directly competing with Circadian's Schedule Risk Analyzer on the software side of the stack.
• Seeing Machines: Seeing Machines builds AI-based driver monitoring and fatigue detection technology primarily for automotive, mining, and aviation operators; comparable to Circadian's transportation and mining fatigue offerings from a sensor/AI perspective.
• Deputy: Deputy offers shift scheduling, rostering, and workforce management SaaS for hourly and shift-based workforces; comparable to Circadian's scheduling solutions, though Deputy emphasizes self-serve SMB while Circadian focuses on enterprise consulting.
• WorkJam: WorkJam delivers digital frontline workforce management — shift swaps, scheduling, task management, and communications — for hourly and shift-based workforces, overlapping Circadian's shift scheduling and shiftworker engagement offerings.

Direct peers

• InterDynamics: InterDynamics provides fatigue risk management software and consulting for aviation, ground transport, and rail — directly overlapping Circadian's surface transportation and aviation segments using comparable biomathematical shift-scheduling models.
• Optalert: Optalert builds driver drowsiness detection technology and fatigue-management programs for commercial fleets and shift-work operators, competing with Circadian's transportation and trucking fatigue solutions from a hardware-plus-software angle.
• SmartCap (RCT Global): SmartCap produces fatigue-detecting wearables and analytics for mining and heavy industry, overlapping with Circadian's mining & metals segment by addressing operator fatigue through technology monitoring rather than schedule analytics.
• Fatigue Science: Fatigue Science sells the Safeyr biomathematical fatigue-prediction SaaS, the most direct head-to-head competitor to Circadian's CAS, targeting the same 24/7 shift-work customer base with overlapping use cases in mining, transportation, and industrial safety.

Broad incumbents

• UKG (Ultimate Kronos Group): UKG is a large enterprise workforce management suite with time-and-attendance and shift-scheduling functionality serving thousands of 24/7 enterprises; it overlaps with Circadian's scheduling tools but without Circadian's dedicated fatigue risk science depth.

Others

• Predictive Success: Predictive Success offers workforce analytics and employee selection software, adjacent to Circadian's workforce performance and safety consulting practice as a data-driven people analytics provider rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/CircadianInc
• Facebookfacebook.com/CircadianWorkforceSolutions
• LinkedInlinkedin.com/company/circadian-technologies

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Circadian