Ok great. Just bear in mind that this is not a definitive matter, meaning that this was introduced through previous case law and each case will depend on its own facts, so just because in the past remote workers have been successful in claiming does not mean that you will be as well.
However, as far as UK employment law is concerned, if an employee has been continuously employed with their employer for at least 2 years they will be protected against unfair dismissal. This means that to fairly dismiss them the employer has to show that there was a potentially fair reason for dismissal and that a fair dismissal procedure was followed.
According to the Employment Rights Act 1996 there are five separate reasons that an employer could rely on to show that a dismissal was fair: conduct, capability, redundancy, illegality or some other substantial reason (SOSR). The employer will not only need to show that the dismissal was for one of those reasons, but also justify that it was appropriate and reasonable to use in the circumstances. In addition, they need to ensure that a fair dismissal procedure was followed and that the outcome was one that a reasonable employer would have come to in the circumstances.
So if you were dismissed without there being any fair reason, or without a fair procedure, the dismissal can be unfair and be challenged as such. This is something which has to be pursued through the employment tribunal within 3 months of termination.
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