Disadvantages of workplace diversity include mandatory training, hindrance of a hiring manager's ability to hire qualified employees, negative impact on workplace relationships and having to make various changes in order to accommodate all employees properly. Another disadvantage is that workplace communication can suffer due to employees whose first language isn't English.
Mandatory training might make an employee feel as if he is being forced to accept another employee of a different background. Such training can also convey the message that workplace diversity is more important than actual employee performance and improvement.
Workplace diversity can also make a hiring manager feel as though he must hire an individual because of his diverse background, as opposed to his actual qualifications and ability to perform a specific job. This practice can lead to friction between hiring managers and company leaders.
Additionally, an employee who isn't from a diverse background might feel as though he doesn't bring as much to the company as someone who is from a diverse background. This can also leave a non-diverse employee feeling as though he doesn't have as many opportunities to advance within the company as someone from a different ethnic or religious background, or someone with a different sexual orientation.
Examples of changes in the workplace that may have to be made for diverse employees include materials written in several languages, on-site interpreters and finding replacements for employees who honor religious holidays during the workweek.