There is no legal requirement that an employer treat his or her employees nicely or even with respect. Harassment is prohibited ONLY if it occurs on the basis of an employee's race, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, marital status, sex, age (over 40), or sexual orientation. Furthermore, unless the conduct is quite severe, a single incident or isolated incidents of offensive conduct or remarks generally do not create an abusive environment. A “mere utterance of an ethnic or racial epithet which engenders offensive feelings in an employee would not affect the conditions of employment to a sufficiently significant degree to violate Title VII.” Rogers v. EEOC, 454 F.2d 234, 4 EPD ¶ 7597 (5th Cir. 1971). To the contrary, a “hostile environment” claim generally requires a showing of a pattern of offensive conduct.
It would be unwise to write the letter from an attorney letterhead if you did not have an attorney actually representing you because this could be considered fraudulent. Furthermore, attorneys in the state of California can be looked up by name o the California Bar's website, and so any fictitious letterhead could easily be discovered as false. If you wish to actually hire an attorney, some may be willing to write a letter for you at a discounted or reasonable rate.
For attorney referrals, visit this link: http://apps.americanbar.org/legalservices/lris/directory/main.cfm?id=CA
or visit http://www.martindale.com
I hope that this adequately clarifies my response and makes it worthy of your "accept." Please remember that I will not be paid for the time I spend assisting you until you press "accept." Thank you so much and I wish you the best of luck.