Proper etiquette is not a lost art, but rather a modern essential, especially in the workplace. A little courtesy goes a long way after your boss has gone to the trouble of giving you a bonus or throwing you a party. Remember, one of the reasons for writing a thank-you card is to encourage future kindness.
Take a piece of stationery and hand-write a greeting at the top. For a business thank-you note, “Dear [Boss's Name],” is most appropriate.
State exactly what you are thanking your boss for. For example, “Thank you for the generous bonus.”
Write a sentence further discussing your appreciation for the gesture. For instance, if you are thanking your boss for a bonus, “I appreciate your recognition of my hard work on the XYZ project. This bonus provides even more motivation to do my best.”
Compose a sentence mentioning successes of the past and showing optimism about the future. For example, “It has been an exceptional two years under your direction and I look forward to a successful future.”
Re-emphasize your appreciation by saying, “I am pleased to work for a company that believes in and rewards its employees.”
End the letter with “Sincerely,” and sign your name.