n.

a payment smaller than needed or expected

the act of paying less than required

The Underpayment of Restricted Players In North American Sports Leagues
Wage determination in urban Russia: Underpayment and the gender differential
High status job title compensation for underpayment: A test of equity theory.
Cognitive Reevaluation of Outcomes in Response to Underpayment Inequity
"Employee theft as a reaction to underpayment inequity: The hidden cost of pay cuts": Correction.
Temporal mechanisms mediating attitude change after underpayment and overpayment
Effects of inequity produced by underpayment on work output, work quality, and attitudes toward the work
The Effects of Piece‐Rate Underpayment and Overpayment on Job Performance: A Test of Equity Theory with a New Induction Procedure
Stealing in the Name of Justice: Informational and Interpersonal Moderators of Theft Reactions to Underpayment Inequity
Losing sleep over organizational injustice: attenuating insomniac reactions to underpayment inequity with supervisory training in in...