Respected Sir/Madam,
I am most respectfully writing this email in order to bring into your kind consideration that I work as __________ (designation) in your reputed company as a part-time employee bearing ________ (mention employee ID) as employee ID.
My name is ________ (name) and this is to most humbly request you to kindly sanction casual leave for ________ (number of days) days from __/__/____ (date) till __/__/____ (date). The reason behind me requesting leave is ___________ (health issues/ person reason/ urgent work/ any other).
I shall be obliged if you could sanction the same at the earliest. For further queries, you may contact me at the contact details mentioned below.
Thanking you,
___________ (Name),
___________ (Employee ID),
___________ (Contact details)