Heres what our legal stuff says..
If it has been found that the employee has been guilty of a minor offence they will be given an oral warning that continued or repeated conduct may result in further disciplinary action, including, in extreme cases dismissal. The employee will be informed that the warning constitutes the first formal stage of the disciplinary procedure and that a note will be placed on their personnel file. A note of the warning will then be placed on the employee's personnel file, but will be disregarded for disciplinary purposes after [Insert time period, e.g. 3 months] months if their conduct is satisfactory. However the employer reserves the right to take into account the whole of the employee's disciplinary record in determining the appropriate sanction. Minor offences should be taken to include (but not be restricted to) the following:
a. poor job performance or substandard work.
b. minor breaches of the terms and conditions of employment.
c. persistent lateness or absenteeism.
d. failure to maintain an acceptable standard of dress.
e. poor standard of hygiene.
f. minor harassment or bullying of a fellow employee.
In the case of any minor harassment or bullying incidents the employee may be asked to apologise to his or her victim or may receive a letter of reprimand from the employer.
And heres a link that might help more too:
here
Rob