University of Illinois System
Policies & Procedures
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8.4.7 Electronic Codes for Human Subject Payments

Policy Statement

The University of Illinois System often conducts research projects that utilize human subjects. When human subjects are offered financial incentives to participate in research, an Amazon electronic code (eCode) may be used for payment in the form of cash equivalents.

Reason for the Policy

An eCode may be used as a cash equivalent to incentivize human subject participation in research projects.

Applicability of the Policy

Whenever eCodes are used as cash equivalents to incentivize human subject participation in research projects.


An eCode must be created in the name of the principal investigator or designee responsible for the payments related to the human subject study. This individual is the custodian of the funding source for the eCode account. All eCodes should be issued directly to participants. Participants must have previously consented in writing to payment in the form of eCodes and be aware of the requirements for redeeming eCodes.

To obtain eCodes for human subject payments:

  1. Complete and email the Amazon eCode Setup form.
  2. Instructions will be sent to the principal investigator or designee on how to issue eCodes.

Human Subject Study eCode End Date

When the eCode funding source reaches its end date it will no longer issue codes unless an extension is requested from the eCode system administrators.

Required Documentation

Required documentation that must be retained by the unit initiating the study includes the IRB approval number, the name of participants, the amount of the payment, and the recipient’s signature.

Related Policies and Procedures

8.4 Payments to Human Subjects

Additional Resources

Payments to Foreign Nationals
Foreign National Payments Resource Page
Award, Prize, and Human Subject Payments
University Payables Training Materials
University Bursar office locations and hours:


Last Updated: October 05, 2022 | Approved: Senior Associate Vice President for Business and Finance | Effective: October 2022