Here are my last two recommendations for the best ways to make your claim stand out to an agency investigator.
2. List some witnesses (but not too many!).
When filing a charge or claim with an administrative agency, you can list witnesses who may have information relevant to your charge. There is an understandable temptation to list as many people as possible. Don't.
For the same reason that you want to make your charge succinct---your investigator has limited time and attention---you also want to list only the main players. These should ideally be people who the investigator would not easily find. For instance, don't list your boss. There is little question that the investigator will contact him or her (or the company attorney) about his or her conduct. Save your power and list, for instance, the three co-workers whom the investigator might not know to contact.
In short, a long list of witnesses will only make your investigator's eyes glaze over.
3. Get the number of the investigator's supervisor.
Occasionally, you will find an investigator who just won't return your efforts to contact him or her. E-mails go unanswered. Calls are sent to a voicemail that is full. In these cases, you need to contact the investigator's supervisor. Sometimes it is only the squeaky wheel that gets the grease. You deserve at least some kind of response from your investigator, even if it's not prompt. If the investigator won't call you back, you need to light a fire under him or her.