http://www.thankyouletters.co.uk/thank-you-letter-for-employees-work-during-year.html

A great way to show employees that they are recognised and that their contributions are valued in a given organisation is to simply write them thank you letters. While it may not be possible to hand write each letter, tailoring letters to fit each individual employee should be preferred over sending out impersonal form letters. For many organisations this may mean having their direct supervisors write these thank you letters, and there is no reason that this should be viewed as inferior or inappropriate when thanking employees for their work during a given year.

Content of Thank You Letters for Employee's Work During Year

Thank you letters for employee's work during a given year should make concrete reference to their contributions to the larger organisation. This will require knowledge of each employee's role within the organisation as well as the specific projects on which each employee worked. In smaller organisations it may be that one senior staff member could write each letter, but in larger organisations it would be more likely that managers or supervisors who work more closely with each employee would be the more logical choices to write these letters. Even if employees will be receiving other compensation for their work, such as an award, pay rise, promotion or bonus, an accompanying thank you letter for their work is not just good business etiquette but an important means of making these employees feel valued by and possibly more loyal towards the larger organisation.

Presentation of Thank You Letters for Employee's Work During Year

Thank you letters for employee's work during the year should not be form letters. In this instance, form letters would be a waste of paper as many employees feel that form thank you letters are just as impersonal as no thank you letters at all. Instead these letters should be neatly typed and on organisational letter head, but include content specific to the recipient. Emails may also be appropriate in a given organisation, as might be holiday cards or thank you cards with individual messages. The general tone of the office or organisation will generally dictate the tone and presentation of thank you letters.