Yes. A diary or log of events could be very helpful, You
should keep track of dates, who attended
meetings, what was discussed, and any special remarks or
statements that were made. Keeping a log that has both routine
work-related facts and events and whistleblower-related events
should help you pinpoint, independently of the log, when certain
events or conversations occurred.
Any log or diary should not include very personal
information that you would not want others to see later and should
not contain overstatements or overly subjective comments.
The nonprofit whistleblower support group, Government
Accountability Project ("GAP"), recommends
that if something particularly significant happens that you mail
yourself a memo so that you will have a
postmark verifying the date of the event.