---
kind: "section"
citation: "45 C.F.R. § 1149.16"
title: "45"
number: "1149.16"
heading: "What constitutes proof of service?"
url: "https://uscodex.org/cfr/45/1149.16"
---

# §1149.16. What constitutes proof of service?

- (a) **Proof of service is established by the following—**
  - (1) When service is made by registered or certified mail, the return postal receipt will serve as proof of service.
  - (2) When service is made by personal delivery, an affidavit of the individual serving the complaint, or written acknowledgment of your receipt or of receipt by a representative, will serve as proof of service.
- (b) When served with the complaint, the serving party must also serve you with a copy of this part and [31 U.S.C. 3801-3812](/usc/31/3801-3812.md).

## Notes

### Authority

Authority: 5 U.S.C. App. 8G(a)(2); 20 U.S.C. 959; 28 U.S.C. 2461 note; 31 U.S.C. 3801-3812.

### Source

Source: 79 FR 67081, Nov. 12, 2014, unless otherwise noted.