There are many companies where complaints about workplace bullying and harassment do not receive appropriate attention. All employees should know that there are things employees can do in such situations.
It is absolutely important for all employers to make sure they have adequate well-documented processes and procedures to follow up on complaints from employees about workplace bullying and harassment. If all employees are made aware of these policies and procedures and if the employer does follow up diligently as per the company guidelines, then they will be able to maintain a positive work environment. On the other hand, if the employers either do not have appropriate policies and guidelines or do not follow them when they receive complaints, then the work environment will only become more and more negative.
On the other side, for all employees it is extremely important to maintain detailed documentation of any negative incidents they had to encounter and what they had done about it. If they decided to put in a complaint to the employer, then it is important to keep track of all documentation of what the complaint was about, when was it filed, who received the complaint and what, if anything, happened after the complaint was received by the employer. Documentation of this nature will be very useful if it becomes necessary for the employees to take the matter to an external authority like a state government department or if it goes further and becomes a legal matter. A mentor had advised me about this several years back and I found it to be extremely useful and effective.