Must an employer give an employee the chance to cross-examine witnesses at a disciplinary hearing?

The Acas code of practice on disciplinary and grievance procedures, which is taken into account when tribunals are considering relevant cases, provides that an employee should be given a reasonable opportunity to ask questions and raise points about any information provided by witnesses. This does not necessarily mean that the employer must allow the employee to cross-examine witnesses at a hearing, if this would not be reasonable. For example, if a witness provides a witness statement but does not attend the hearing, it may be reasonable for the employee to put questions to them in writing.