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NAICS Code· 561990

All Other Support Services

This industry comprises establishments primarily engaged in providing day-to-day business and other organizational support services (except office administrative services, facilities support services, employment services, business support services, travel arrangement and reservation services, security and investigation services, services to buildings and other structures, packaging and labeling services, and convention and trade show organizing services). Illustrative Examples: Bartering services Flagging (i.e., traffic control) services Bottle exchanges Float decorating services Inventory taking services Contract meter reading services Lumber grading services Diving services on a contract or fee basis Cross-References. Establishments primarily engaged in--Show more

NAICS 561990 — All Other Support Services encompasses a broad array of specialized, non-standardized support functions that do not fit into more defined categories within the support services sector. This includes niche administrative, logistical, technical, and operational support services such as facility management, specialized staffing, medical logistics, maritime operations support, IT-enabled administrative services, and mission-critical ancillary functions that enable federal agencies to maintain operational continuity.

444
Active Contracts
$808.3M
Total Obligations (12mo)
1.2K
Awarded Contracts (12mo)
503
Contractors Awarded (12mo)
-49.0%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 561990.

AI Industry Description

NAICS 561990 — All Other Support Services encompasses a broad array of specialized, non-standardized support functions that do not fit into more defined categories within the support services sector. This includes niche administrative, logistical, technical, and operational support services such as ...

NAICS 561990 — All Other Support Services encompasses a broad array of specialized, non-standardized support functions that do not fit into more defined categories within the support services sector. This includes niche administrative, logistical, technical, and operational support services such as facility management, specialized staffing, medical logistics, maritime operations support, IT-enabled administrative services, and mission-critical ancillary functions that enable federal agencies to maintain operational continuity. These services are often mission-essential but non-core, allowing agencies to focus on primary objectives while outsourcing complex, transient, or highly specialized tasks. In the federal contracting landscape, this NAICS serves as a catch-all for agile, responsive support providers who deliver tailored solutions under tight operational constraints, frequently in high-demand environments. Top contractors in this sector include D2 Government Solutions, Inc., Loui Consulting Group, Inc., Cinteot Inc., Ninety Five South, Inc., Marathon Medical Corporation, MST Maritime Management LLC, Echelon Front, LLC, BHPE LLC, Logistico LLC, 060 Technology Solutions LLC, Suntiff, LLC, Biomedical Research Alliance of New York LLC, and Tech O.R., LLC. The competitive landscape is dominated by small businesses and mid-sized firms with deep domain expertise in niche areas such as medical logistics, maritime operations, and specialized IT support, many of which hold small business set-asides or serve as subcontractors to larger primes. Primary awarding agencies include the Department of Defense, Department of State, Department of Housing and Urban Development, Department of Veterans Affairs, Department of Agriculture, and Department of the Treasury. Demand is driven by mission-enabling needs such as overseas support operations, medical research logistics, housing program administration, and specialized technical staffing for temporary or high-skill roles. The market is characterized by high opportunity density in specialized, non-commodity support services, with frequent use of IDIQs, BPA solicitations, and small business set-asides. Contractors with agile, compliant, and highly responsive service delivery models are best positioned to capture recurring task orders across multiple agencies.

Top Contractors

Companies with the highest total award value under NAICS 561990, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
LOCKHEED MARTIN CORPORATION$360.0M88
VERTEX MODERNIZATION AND SUSTAINMENT LLC$174.9M2
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.$34.0M1
CHENEGA GLOBAL PROTECTION, LLC$32.6M10
PONDERFUL, LLC$14.3M2
NABHOLZ CONSTRUCTION CORPORATION$14.1M2
LLOYD CONSTRUCTION CO INC$13.2M1
SIERRA NEVADA COMPANY, LLC$7.1M3
TEYA DIVERSIFIED SERVICES LLC$6.7M11
ARCUS GROUP, LLC$6.5M23

Top Agencies

Federal agencies directing the most contract spending toward NAICS 561990.

Department Of Defense314 awards$611.4M
Department Of State (dos)25 awards$36.9M
Department Of Defense (dod)147 awards$34.0M
National Aeronautics And Space Administration21 awards$33.6M
Department Of Veterans Affairs184 awards$22.6M
Department Of Homeland Security94 awards$13.8M
Defense Commissary Agency1 award$12.9M
Department Of Health And Human Services30 awards$8.7M
Commander2 awards$4.5M
Department Of Agriculture43 awards$4.4M

Related NAICS Codes

Industries similar to All Other Support Services, by shared sector, subsector, and industry group.

Packaging and Labeling Services

This industry comprises establishments primarily engaged in packaging client-owned materials. The s...
561910Same Industry GroupHigh Similarity

Convention and Trade Show Organizers

This industry comprises establishments primarily engaged in organizing, promoting, and/or managing e...
561920Same Industry GroupHigh Similarity

Office Administrative Services

This industry comprises establishments primarily engaged in providing a range of day-to-day office a...
561110Same SubsectorMedium Similarity

Facilities Support Services

This industry comprises establishments primarily engaged in providing operating staff to perform a c...
561210Same SubsectorMedium Similarity

Employment Placement Agencies

This U.S. industry comprises establishments primarily engaged in listing employment vacancies and in...
561311Same SubsectorMedium Similarity

Executive Search Services

This U.S. industry comprises establishments primarily engaged in providing executive search, recruit...
561312Same SubsectorMedium Similarity

Temporary Help Services

This industry comprises establishments primarily engaged in supplying workers to clients' businesses...
561320Same SubsectorMedium Similarity

Professional Employer Organizations

This industry comprises establishments primarily engaged in providing human resources and human reso...
561330Same SubsectorMedium Similarity

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NAICS 561990 FAQ

Frequently Asked Questions

NAICS code 561990 covers All Other Support Services. This industry comprises establishments primarily engaged in providing day-to-day business and other organizational support services (except office administrative services, facilities support services, employment services, business support services, travel arrangement and reservation services, security and investigation services, services to buildings and other structures, packaging and labeling services, and convention and trade show organizing services). Illustrative Examples: Bartering services Flagging (i.e., traffic control) services Bottle exchanges Float decorating services Inventory taking services Contract meter reading services Lumber grading services Diving services on a contract or fee basis Cross-References. Establishments primarily engaged in--

Recently Posted in All Other Support Services

NAICS: 561990
New
SLED
Warranty Administration and AssignmentThe contract involves managing and assigning manufacturers’ warranties for replaced parts and equipment to the California Department of State Hospitals as part of ongoing maintenance services. This subcontract requires the vendor to ensure that all warranty protections are properly documented, transferred, and applied to hospital assets following repairs or replacements, maintaining compliance with manufacturer terms and institutional requirements. The work is critical to sustaining the operational integrity of medical and support equipment across state hospital facilities. The solicitation was posted on July 14, 2026, with responses due by August 7, 2026, and falls under NAICS code 561990 for other support services. It is issued by the California Department of State Hospitals under the state of California, with no specific location details provided for performance or office address. The contract type is a subcontract, and no set-aside designation or point of contact information is included in the posted data. All activities must align with the Department’s maintenance protocols and warranty administration standards to ensure continuous coverage and accountability for replaced components.
California Department of State Hospitals

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about 18 hours ago

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NAICS: 561990
New
SLED
Traffic Control and SignageThe contract involves the installation of temporary and permanent traffic control devices and signage associated with construction activities, ensuring safety and compliance throughout the project lifecycle. It is classified as a subcontract under NAICS code 561990 and is issued by the Florida Department of Children and Families, though the specific location of performance is not detailed. The solicitation was posted on July 13, 2026, with a response deadline of October 13, 2026, at 8:00 PM, requiring interested parties to submit proposals before this time. The contract does not specify any set-aside provisions or target demographic for participation, and there is no designated point of contact provided for inquiries. The work will likely require adherence to state and federal traffic control standards, and performance may span multiple sites depending on the scope of related construction projects under the agency's oversight.
Department of Children and Families

POSTED

about 23 hours ago

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in 3 months
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NAICS: 561990
New
SLED
Safety & Site Protection ServicesThe contract titled Safety & Site Protection Services requires the installation of safety barriers and the ongoing maintenance of a clean, debris-free work environment throughout all project phases to safeguard workers and the public. This subcontract, issued under NAICS code 561990, is managed by the Florida School for the Deaf and the Blind and is open for bids through the Florida marketplace platform. The solicitation was posted on July 13, 2026, with a response deadline of August 11, 2026, and the place of performance is located within the state of Florida, though specific city and zip details are not provided. The work must be executed in a manner that ensures continuous compliance with safety standards and site cleanliness, with no set-aside requirements specified. Bidders must submit proposals through the provided vendor portal by the stated deadline to be considered.
Florida School for the Deaf and the Blind

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about 23 hours ago

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in 28 days
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NAICS: 561990
New
Temporary Traffic ControlThe contract entails the setup and maintenance of temporary traffic control zones in proximity to public roads during construction activities, ensuring safe and compliant traffic flow for workers and the public. The work is required in Sterling, with a zip code of 20166, and falls under the NAICS code 561990 for other support services. It is structured as a subcontract, with no specific set-aside provisions designated. The solicitation was posted on July 13, 2026, and responses must be submitted by August 11, 2026, at 9:00 PM. The contracting authority is the Department of the Interior, specifically the Office of Acquisition and Property Management, though no point of contact details are provided. Interested parties can access further information and submit proposals through the eBuy platform via the provided link.
Department of the Interior

POSTED

about 24 hours ago

DEADLINE

in 28 days
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NAICS: 561990
New
Temporary Traffic Control ServicesThe contract pertains to the installation and maintenance of temporary traffic control zones, signage, and flagging operations, under the solicitation issued by the HIV/AIDS Bureau within the Health Resources and Services Administration of the Department of Health and Human Services. It is classified as a subcontract set aside for small businesses under the SBA program and falls under the NAICS code 561990 for other support services. The response deadline is August 3, 2026, and the work is to be performed offsite with the designated place of performance listed as 20857. All activities must comply with applicable traffic control standards and safety regulations to ensure public and worker safety during the execution of services. The contract is accessible through the GSA eBuy platform, and vendors interested in participating must submit their quotes prior to the stated deadline.
Department of Health and Human Services

POSTED

1 day ago

DEADLINE

in 20 days
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NAICS: 561990
New
SLED
Temporary Traffic Control ServicesThe contract titled Temporary Traffic Control Services requires the setup and maintenance of temporary traffic control zones, encompassing the installation and management of signage, barriers, and flagging operations to ensure safe and efficient traffic flow during construction or maintenance activities. The work is to be performed under a subcontract agreement for the Town of Palm Beach in Florida, with a North American Industry Classification System code of 561990, indicating it falls under other support services. The solicitation was posted on July 13, 2026, and responses are due by August 13, 2026, with no specific set-aside provisions specified. All performance is expected to occur within the jurisdiction of the Town of Palm Beach, although the exact location details are not provided. There is no designated point of contact listed, and no specific office address or place of performance beyond the state has been disclosed. Interested parties must submit proposals through the provided online portal before the deadline, and while the contract is structured as a subcontract, no parent contract or primary contracting agency details are included in the data. Compliance with local traffic control standards and safety regulations is implied as essential for successful execution.
Town Of Palm Beach

POSTED

1 day ago

DEADLINE

in 30 days
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NAICS: 561990
New
DIBBS
Temporary Traffic Control and SignageThe contract pertains to the installation and maintenance of temporary traffic control devices and signage during active construction phases, specifically scoped to support operations in Tracy, California, with a postal code of 95304-5000. It falls under the NAICS code 561990, indicating it is a professional, scientific, and technical service related to other support activities, and is classified as a subcontract within the Department of Defense’s ASC Commodities Division. The work is required to ensure public and worker safety by implementing and sustaining compliant traffic control measures throughout the duration of construction activities. All performance must adhere to applicable federal and state transportation standards for temporary traffic management systems. The solicitation was posted on July 13, 2026, with a strict response deadline of July 16, 2026, leaving a very limited window for interested parties to submit proposals. The contract does not specify a set-aside designation, meaning it is open to all qualified subcontractors regardless of business size or certification status. The place of performance is clearly defined as Tracy, though no additional office address or point of contact information is provided in the data. Proposals must be submitted through the DIBBS portal via the provided link, and contractors are expected to have the capability to mobilize rapidly, maintain consistent on-site traffic control operations, and support any adjustments required by evolving construction schedules.
ASC COMMODITIES DIVISION

POSTED

1 day ago

DEADLINE

in 2 days
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NAICS: 561990
New
DIBBS
Hazard Communication and Labeling ComplianceThe contract requires the preparation and application of hazard warning labels on unit containers in strict compliance with OSHA’s Hazard Communication Standard, specifically targeting rivets that have hazardous coatings or plating. This work is critical to ensuring proper identification of chemical hazards and safe handling procedures for personnel, aligning with federal safety regulations. The labels must be accurately designed, printed, and affixed according to specified requirements to communicate risks such as toxicity, flammability, or reactivity associated with the coated or plated materials. The contract is a subcontract under the Department of Defense’s ASC Commodity Division, with a place of performance at Tinker Air Force Base, Oklahoma, ZIP 73145-8000. It was posted on July 13, 2026, with responses due by July 16, 2026, and falls under NAICS code 561990 for Other Support Activities. The solicitation is managed through the DIBBS system, and all work must meet the regulatory and operational standards enforced by the DoD to ensure consistency in safety documentation across defense supply chains.
ASC COMMODITIES DIVISION

POSTED

1 day ago

DEADLINE

in 2 days
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NAICS: 561990
New
DIBBS
Hazardous Materials Packaging and Labeling Compliance ServicesThe contract requires the provision of HAZCOM-compliant labeling and packaging services for hazardous materials, specifically targeting nuts that have been treated with hazardous coatings or lubricants in accordance with 29 CFR 1910.1200. The work must ensure all hazardous substances are properly identified, labeled, and packaged to meet federal safety standards for workplace communication of chemical hazards. Performance of the contract is scheduled to occur at Hill Air Force Base, Utah, with a delivery location identified by the zip code 84056-5734. This is a subcontract under the SBA set-aside category, classified under NAICS code 561990 for other support activities. The solicitation was posted on July 13, 2026, with responses due by July 21, 2026. The contracting entity is the ASC Commodities Division within the Department of Defense. Interested parties must comply with all regulatory requirements related to hazardous material handling and documentation, and ensure that labeling and packaging systems are accurate, legible, and fully aligned with OSHA’s Hazard Communication Standard. The contract does not specify a monetary value or award amount, and point of contact details are not provided in the data.
ASC COMMODITIES DIVISION

POSTED

1 day ago

DEADLINE

in 7 days
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NAICS: 561990
New
DIBBS
Packaging and Labeling ServicesThe contract requires the provision of packaging and labeling services compliant with MIL-STD-129 for marking and ASTM D3951 for packaging standards, ensuring all items are properly identified and protected according to military specifications. Hazardous material labeling must be included where applicable, adhering to relevant safety and regulatory requirements. The work is to be performed at the specified location in New Cumberland, Pennsylvania, with a zip code of 17070-5002, and the submission deadline is July 16, 2026, with the solicitation posted on July 13, 2026. This is a subcontract under NAICS code 561990, issued by the ASC Commodities Division of the Department of Defense.
ASC COMMODITIES DIVISION

POSTED

1 day ago

DEADLINE

in 2 days
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NAICS: 561990
New
DIBBS
Hazardous Material Packaging and LabelingThe contract requires compliance with OSHA’s Hazard Communication Standard for the proper labeling and documentation of hazardous materials in packaging, ensuring all applicable safety and regulatory requirements are met throughout handling, storage, and distribution. The work pertains to the packaging of hazardous materials under a subcontract agreement, with performance location specified at Tinker Air Force Base, Oklahoma, 73145-8000, and must be completed by the response deadline of July 21, 2026. The NAICS code 561990 indicates the work involves other support services, and the contracting agency is the ASC Commodities Division under the Department of Defense. All submitted proposals must demonstrate a clear understanding of OSHA’s labeling systems, safety data sheets, and hazard classification protocols to meet contractual obligations.
ASC COMMODITIES DIVISION

POSTED

1 day ago

DEADLINE

in 7 days
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NAICS: 561990
New
DIBBS
Packaging, Marking & Compliance LabelingThe contract requires strict adherence to Department of Defense packaging, marking, and labeling standards for all shipments, ensuring that every package and shipping document clearly displays the contract and delivery order numbers to maintain traceability and compliance. All materials must be packaged and labeled according to DoD regulations to meet operational and logistical requirements, with no deviations permitted in the application of required markings or documentation formats. This subcontract falls under the NAICS code 561990 and is administered by the Defense Logistics Agency under the Department of Defense. The performance location and specific contact details are not provided, but compliance with labeling and packaging criteria is mandatory regardless of shipment destination. The contract was posted on July 13, 2026, and is accessible through the DIBBS portal for reference and verification.
Defense Logistics Agency

POSTED

1 day ago

DEADLINE

N/A
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