Onboarding vs. On-boarding
“Onboarding” is the standard closed form in current dictionary use for the process of helping a new employee or user become established. A hyphenated “on-boarding” may appear in older or house-style material, but the closed spelling is the safer modern default.
Use “onboarding” as the modern default. Keep “on-boarding” only when a house style, quoted source, or established product terminology specifically requires it.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| ordinary modern noun/adjective for bringing a new employee, customer, or user into a system/process | onboarding | Use the closed form as the modern default. |
| legacy or house-style spelling that explicitly retains a hyphen | on-boarding | Keep it only when the governing style or fixed terminology requires it. |
| verbatim product, policy, or quoted wording | preserve the published form | Do not silently respell fixed source text. |
Quick tests
Meaning / construction test
Are you writing ordinary current prose without a house-style rule that requires the hyphen?
If yes: Use “onboarding.”
If no: If a governing style, product name, policy title, or quotation uses “on-boarding,” preserve that required form.
Caveat: The recommendation is an editorial default, not a claim that every historical or house-style instance of “on-boarding” is invalid.
Examples
The company simplified its onboarding process.
The closed spelling is the modern default.
New employees complete onboarding during their first week.
The noun is written as one word in ordinary current usage.
The archived policy uses “On-boarding” in its official title.
Fixed historical or official wording can retain the hyphenated form.
Further guidance
Consistency
If an organization has an official branded or policy spelling, preserve it consistently.
Default
Write “onboarding” as one word in ordinary modern prose.
Hyphenated Form
Treat “on-boarding” as a style-dependent or legacy variant rather than the default.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- onboarding (opens in a new tab)Cambridge University Press · Current dictionary evidence for the closed spelling onboarding