A leave of absence letter is a formal letter that you write to your supervisor to request a leave of absence from work. The formal letter is needed for your personnel file. In India, a Government service holder under the Union Government or any Provincial (State) Government can avail the following types of leave of absence during the service period. For those benefits that are based on an employee's time in his/ her job, the period of the absence may be included in the tallies of consecutive service for certain benefits. If the time is not included, it is simply omitted from the tally, but not considered a break in service. We are also going to Paris and Amsterdam. During periods of time where the employer's market is sluggish, some employers offer certain classes of employees an opportunity to take an unpaid leave of absence as extra vacation time, in an effort to temporarily reduce operating expenses without the complications of performing a layoff, and potentially losing critical employees permanently. Such a period is referred to as a leave of absence in lieu of layoff. That and whether the leave would be paid or unpaid.