Dear [Supervisor's Name], I am writing to respectfully request the cancellation of my previously approved leave of absence, effective immediately. Due to unforeseen circumstances, I am no longer able to take the time off as initially planned. I sincerely apologize for any inconvenience this may cause and appreciate your understanding in this matter. As discussed during our previous conversation, I was granted a leave of absence starting from [start date] until [end date]. However, due to an urgent personal situation that has arisen, I have no choice but to cancel my leave and return to work immediately. I understand that canceling a leave of absence may disrupt the schedule and workload of my colleagues and the department as a whole. I assure you that I will do my best to smoothly transition back into work and minimize any negative impact caused by this sudden change in plans. Furthermore, I am fully committed to fulfilling my responsibilities and catching up on any tasks that may have been postponed during my intended absence. Furthermore, I will work diligently to restore the workflow and ensure that all projects are back on track as soon as possible. Again, I apologize for any inconvenience or disruption this may cause and appreciate your understanding in this matter. If necessary, I am open to discussing alternative solutions or adjustments that can help mitigate any potential issues arising from the cancellation of my leave. Thank you for your prompt attention to this matter. I eagerly look forward to returning to work and contributing to the team's success once again. Sincerely, [Your Name] [Your Employee ID] [Department/Division]