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Your Environment. Your Health.


Research Supplements at NIEHS

Office Worker

Principal investigators holding NIEHS research grants may request supplemental funds for two purposes:

  • to meet unforeseen costs not included in the previous competitive or non-competitive application, or
  • to provide funding opportunities for special populations to enter or re-enter biomedical research.

Principal investigators at domestic institutions with an active NIEHS research grant, and with a reasonable period of research support (usually 2 years or more) remaining at the time of the supplemental award, are eligible to submit a request to NIEHS for an administrative supplement to the grant.

FY 2023+ Receipt Dates*
Receipt Date** Earliest Award Date
September 1, 2022 December 2022
December 1, 2022 March 2023 (FY23)
April 1, 2023 July 2022 (FY23)
September 1, 2023 December 2022 (FY24)

*Specific dates will be posted for each year.

**The receipt dates apply to all general administrative supplements and Superfund supplements.

General Administrative Supplements

Supplemental funds can be requested for emergency or other unforeseen situations which result in unforeseen costs, such as natural or manmade disasters that damage the PI's lab or other research resources, failure of essential equipment, or unexpected or increased costs of recruiting subjects or performing laboratory analyses. Grantees may also request funds to update equipment or methodologies that have become out of date. The grantee must show that the new methodology will significantly enhance the quality of the data. Finally, under some circumstance, grantees may request funds to follow up on unanticipated results or to enhance components of their research that have been unexpectedly productive. However, these enhancements must be within the scope of research proposed and reviewed in the parent grant, and are generally given lower priority. Grantees should contact their Program Officer about this type of supplement.

Supplement Programs for Special Populations

Supplement programs are used to offer laboratory experience to a wide array of individuals including high school students, undergraduate students in health-related sciences, underrepresented minorities, persons with disabilities, scientists re-entering the work force after taking time off for family responsibilities, etc. Individuals may receive support under these programs on only one grant at any time, but may be supported by more than one grant during their research careers.

FY 2023 Receipt Dates for Diversity/Re-entry Supplements
Receipt Date Earliest Award Date
June 1, 2022 August 2022 (FY22)
October 1, 2022 December 2022 (FY23)
December 1, 2022 February 2023 (FY23)
February 1, 2023 April, 2023  (FY23)
April 1, 2023 June, 2023 (FY23)
June 1, 2023 August, 2023 (FY23)
October 1, 2023 December, 2023 (FY24)

Note: Diversity and Re-entry supplement applications are reviewed every other month to minimize the time from application to award. Meritorious diversity/re-entry supplements received after June 1 may not be awarded until after the start of the next fiscal year in October, pending availability of funds.

Superfund Research Program Supplements

The Superfund Research program provides administrative supplements to SRP Grantees. For more information, please visit the SRP General Supplement webpage.

Per the instructions provided in the FOAs listed on the webpage above, supplement applications must be submitted electronically to

Grantees are highly encouraged to contact their assigned SRP Program Officer before submitting an administrative supplement.

Note: Unless otherwise noted, receipt dates listed above apply to Superfund Program grantee applications.

Worker Training Program Supplements

The Worker Training Program provides administrative supplements to support the training of workers who may be exposed to hazardous materials encountered during hazardous waste operations, hazardous materials transportation, and environmental restoration of contaminated facilities or chemical emergency response. Supplements are also granted to address emerging occupational hazards, new regulations, response to natural or man-made disasters, or unforeseen issues and emergencies. For more information, please contact your program officer.

Per the instructions provided in the FOA(s) listed above, supplement applications must be submitted electronically to

Also, visit the Worker Training Program Current Funding Opportunities webpage for other funding announcements under the Worker Training Program.

Grantees are encouraged to contact their program officers before submitting an administrative supplement.

Note: Unless otherwise noted, receipt dates listed above apply to Worker Training Program grantee applications.

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