Discrimination in the workplace
Discrimination against employees on any grounds other than their ability to do the job is a bad idea - and could also be illegal. If an employee or potential employee brings a discrimination case against your business, you could be tied up in costly and time-consuming legalities for months. If they win, you could be liable for unlimited damages.
You need to make sure that your business, and your employees, do not act in a discriminatory way - either deliberately or by mistake. You also need to be ready to deal with any inappropriate behaviour or complaints.