Yes. A recent Employment Appeals Tribunal case looked at whether someone who had been engaged as a lecturer in Theatre Studies could be asked to undertake teaching on an English course. It found that ‘a management instruction [like this] to carry out duties which the Appellant was not contractually obliged to perform is unlikely to be reasonable.’

Staff at the FE College are being asked (virtually forced) to undertake the teaching of classes which are not within their specialism for example; someone teaching Health & Safety without any knowledge, training or any other support.
This is not their speialist area and this is a specilised.
Can the employee refuse?