Discipline and grievance
Surely one of the most difficult situations for managers right?
A fair and consistent approach will ensure you meet your obligations and deal smoothly with problems when they arise. A balanced and reasonable investigation is necessary before any decisions are made. There should also be an opportunity for the individual to have representation at meetings and to appeal the outcome.
This is a particularly complex area of HR management. Belvedere HR can guide you through the process or conduct it on your behalf.