In legal and professional drafting, precision of language is essential. Two expressions that often cause confusion are “Per Pro” (PP) and “On Behalf Of.” While both indicate that one person is acting for another, they carry different legal implications and are not always interchangeable.
This article explains the meaning of PP and On Behalf Of, their proper usage, and how they are interpreted across the United Kingdom, Europe, the United States, Asia, and Latin America.
What Does “Per Pro” (PP) Mean?
“Per Pro”, abbreviated as PP, comes from the Latin term per procurationem, meaning “through the agency of.” It is used when a person signs a document on behalf of someone else with delegated authority.
Key Features of PP
- Indicates formal authorization
- Commonly used in letters and contracts
- Shows that the signer is acting as an agent
- Often appears before the signer’s name
Example:
PP John Smith
for and on behalf of ABC Ltd.
What Does “On Behalf Of” Mean?
“On Behalf Of” is a plain English phrase indicating that someone is acting in the interests of another person or organization. Unlike PP, it does not always imply formal or written authority.
Key Features of “On Behalf Of”
- More flexible and informal
- Common in business correspondence
- May or may not imply legal authorization
- Widely understood in global contexts
Example:
Jane Doe, on behalf of XYZ Corporation
Core Differences Between PP and On Behalf Of
| Aspect | Per Pro (PP) | On Behalf Of |
|---|---|---|
| Origin | Latin (formal) | English (plain) |
| Authority | Explicit delegation | May be implied |
| Formality | High | Medium to low |
| Common Use | Legal & corporate documents | Business & general use |
| Risk Level | Requires clear authorization | Lower but less precise |
Usage in the United Kingdom
In the United Kingdom, the distinction between PP and “On Behalf Of” is well recognized.
UK Practice
- PP is used where authority is formally granted
- Often seen in contracts, legal letters, and company documents
- “On Behalf Of” is acceptable in routine business correspondence
Using PP without authority can expose the signer to personal liability under UK law.
Usage in Europe
Across Europe, usage depends on whether the country follows common law or civil law traditions.
European Approach
- Common law jurisdictions (e.g., Ireland): Similar to UK practice
- Civil law jurisdictions (e.g., Germany, France): Focus on power of attorney rather than wording
In many European countries, legal effect depends on documented authority, not whether PP is written.
Usage in the United States
In the United States, the emphasis is placed on actual authority, not terminology.
US Perspective
- PP is understood but rarely used
- “On Behalf Of” is more common
- Authority is determined by agency law, not phrasing
American legal documents often specify titles and authorization clauses instead of Latin abbreviations.
Usage in Asia
In Asia, interpretation varies by jurisdiction.
Common Law Jurisdictions
- India, Singapore, Hong Kong: PP recognized and used similarly to the UK
Civil Law Jurisdictions
- Japan, China, South Korea: Authority must be proven separately
- Wording alone does not create legal power
Using PP in Asia should always be supported by written authorization.
Usage in Latin America
Most Latin American legal systems are civil law based.
Regional Practice
- PP is rarely used formally
- “On Behalf Of” appears in translated or international documents
- Legal authority relies on notarized powers of attorney
In Latin America, terminology has less importance than documented delegation.
When Should You Use PP vs On Behalf Of?
Use PP When:
- Formal authority is granted
- Signing contracts or legal documents
- Acting under a power of attorney
Use “On Behalf Of” When:
- Writing general correspondence
- Communicating business intentions
- Authority is implied or informal
Although PP and “On Behalf Of” both indicate representation, they are not legally identical. PP signals formal delegated authority, while “On Behalf Of” offers flexibility but less legal precision. Understanding regional differences ensures accurate drafting and reduces legal risk, especially in cross-border matters.
