Should an employee give notice of resignation, or should the employer give notice of termination of contract or dismissal, and the employer requires the employee to leave the premises immediately, the employer is still obliged to pay the employee for the full period of notice given by the employee.
Should an employee give notice of resignation, but the employee requests to leave the employment immediately, then the employer has the right to grant that request, but then the employer is not obliged to pay the employee for the period of notice given. The employer also has the right to refuse such a request from the employee.