At my office we all employees mark our attendance in a attendance register,
we also mention our in coming and out coming times in register, I have noticed that some of our employees only mark their signature in register and don't wire their time. I want to write them an email.
Dear Xyz,
I have noticed that you are not mention your office in coming and office out going time in register, please from now tomorrow you all have to write your times with signature as well.
it has come to my attention that the employee attendance register is not being fully completed. Henceforth please ensure that times of arrival and departure as well as signature are recorded appropriately.
If so have a kind word with the staff and explain why they need to note down the time. Then leave a note by the register to remind everyone to include the time when they sign in and out.
Management by email is not effective or to be admired.
In this situation a verbal, non formal reminder would be my way of dealing with this.
An e-mail brings with it a certain formality. By all means place a note on the employees file to say you have spoken with them, so there is written record.
Looking at your history of this type of question - either you are an employee, in which case you need some training, or your a manager, and you appear to have been promoted above your abilities, and you need some training.
Because all your questions are about how to write emails I've always assumed you were on some kind of admin course, not in the UK probably. Is that right?