Can a supervisor exclude any employee an annual pay raise (that is given based on no criteria other than that the company can afford to do so) with the reasoning being that an employee was given a pay increase earlier in the year based on added job r

Can a supervisor exclude any employee an annual pay raise (that is given based on no criteria other than that the company can afford to do so) with the reasoning being that an employee was given a pay increase earlier in the year based on added job responsibilities? There are no pay ceilings or limits established at this company.