Company Rules and Procedures
In addition to contractual arrangements with employees, most organisations will have in place standing work rules addressing matters such as health and safety or other standard operating procedures.
With such work rules, procedures and similar documents where you feel you should be calling the shots, it may be desirable that these are not made part of the employment contract. Otherwise any variation would have to be approved by the employee.
Works and company rules should therefore be drafted and referred to in a way which ensures that they are regarded as unilateral instructions on your part.
It is however advisable in any event, to develop such rules in consultation with trade unions or staff representatives.
Breach of clear and reasonable disciplinary rules may well justify you in dismissing an employee provided you acted reasonably in doing so.