The General Rule: Prospective vs. Retroactive
In most "At-Will" jurisdictions (including 49 US states), an employer has the legal right to change an employee's pay rate for future work. However, there is a fundamental mechanical barrier that protects workers: **Retroactive pay cuts are prohibited.**
Mechanically, this means that if you work on Monday at $25/hour, your employer cannot tell you on Friday that they decided to pay you only $20/hour for the work you already completed. They must notify you of the change before the work is performed.
Notice Requirements by Region
United States (Federal & State)
Under the FLSA, there is no federal notice period required for a pay cut, as long as the new rate is above the minimum wage. However, many states have strict notice statutes:
- California: Requires notice of a pay change before the work is performed (usually via a new 'Notice to Employee').
- New York: Requires written notice at least seven calendar days before a pay decrease takes effect.
- Missouri: Requires 30 days' notice before reducing wages.
United Kingdom
In the UK, pay is a fundamental term of the **Employment Contract**. An employer cannot unilaterally change your pay without your agreement or a specific "variation clause" in the contract. Attempting to force a pay cut without agreement may be considered a "Fundamental Breach of Contract" or "Constructive Dismissal."
Verify Your Minimum Wage
A pay cut is only legal if the new rate remains above your regional statutory minimum.
Check Min Wage Compliance