16 C.F.R. § 1105.9 Itemized vouchers.
Title 16 - Commercial Practices
The participant shall be paid upon submission of an itemized voucher listing each item of expense. Each item of expense exceeding $15 must be substantiated by a copy of a receipt, invoice, or appropriate document evidencing the fact that the cost was incurred.
Title 16: Commercial Practices
PART 1105—CONTRIBUTIONS TO COSTS OF PARTICIPANTS IN DEVELOPMENT OF CONSUMER PRODUCT SAFETY STANDARDS
§ 1105.9 Itemized vouchers.