The main requirements of unfair dismissal law in the UK regarding capability and misconduct issues are that employees deserve a fair reason for termination, employers must have confirmation from customers and staff before terminating an employee, and dismissals cannot take place on disciplinary grounds. The employer must also consider making adjustments for an employee's disability and ensure income protection. However, employees can be terminated due to misconduct, such as dishonesty or suspicion of a crime, with the employer only needing to believe the misconduct rather than establishing the fact.