A complaint is very difficult to define. However, personnel experts have tried to distinguish between grievances, grievances, and grievances. Generally, dissatisfaction in any form expressed verbally among employees is called grievance. A grievance is often work-related and brought to the attention of management. This is often changed to mean that the complaint should be in writing and not verbally.
In a broader sense, some organizations understand the term complaint; They emphasize that a complaint should be processed through the normal channels of complaint process. Consequently, the term complaint has been defined differently by different authorities and writers. For example, Dale Yoder defines it as “a written complaint filed by an employee and an allegation of wrongful conduct.” And Keith Davies defines it as “any real or perceived sense of personal injustice which an employee has in relation to his employment relationship”.
According to Jusius, “A grievance is any expression of dissatisfaction, legitimate or illegitimate, arising from something related to the organization that an employee believes or even feels is unfair.” Piggers and Myers identified that the terms—dissatisfaction, complaint, and complaint—clearly indicate the type and level of dissatisfaction. Dissatisfaction is, they say, something that bothers an employee, whether he expresses it verbally or not. A grievance is a verbal or written grievance brought to the attention of management or trade union representatives.
A complaint is simply a complaint that can be ignored, overburdened or dismissed without consideration; and the employee feels that an injustice has been done, especially when the complaint is submitted in writing to a manager or trade union official. Beach describes a grievance as “any work-related frustration or sense of injustice brought to management’s attention.” Often a complaint is “something an employee feels or feels is wrong and is usually followed by an aggressive feeling of annoyance.” It (complaint) is usually more formal than a complaint of character.