"Sunday is a key trading day for us and your contract includes Sunday working as a standard provision. If you do not wish to work on Sunday, put your request in writing to your HR representative/Personal Manager. Three months' notice is required from the date of your letter. Once three months have passed you will no longer have to work on Sundays. We will try and reschedule your hours to a different time of the week although this cannot be guaranteed and there is no legal obligation on us to provide you with alternative hours to make up for the shortfall of no longer working Sundays. ……"
"42. …. We ask ourselves the somewhat rhetorical question why did Miss Sagar, who took the decision to retract the offer, change her mind? She had known the Claimant's insistence that he would not work on Sundays from his email and she had taken no action then. She had not as we say, stated that that meant that he had obtained the job under false pretences and would he not [have] been offered it had that been known. She had in fact indicated quite clearly that she was prepared to accommodate Sunday working but not on 43 hours. It is also quite clear, and indeed it is common ground, that there was a final proposal on the table that the Claimant should be allowed not to work Sundays but on a 37-hour contract. It is not simply the fact of having expressed his objection to Sunday working or indicated a proposal to opt out that was the trigger for the retraction letter. There was something else and we are satisfied that that was the change in position by the Claimant."
"43. Miss Sagar had been led to believe, either in telephone discussion with Natalie Pickles or by being copied into the email that Natalie had sent Miss Howsell at 10.51, that the Claimant had agreed the variation only then to be told that there had been a change of mind. And that is why she instructed the email to be written. It seems to us quite clear that that, as set out at the time, was the reason. The email at 14.01 says: "as we have not been able to agree a suitable alternative regarding your working hours we are now in a position where there is no other option but to retract the offer. As you are unable to work Sundays we have offered an alternative working pattern which you have advised would not be suitable for you"
"The contract has not been retracted because you are unable to work Sundays. The offer was retracted as you are unable to fulfil requirements you had applied for. The Sundays were negotiated by reducing those hours as you requested. However this was the decision you were not in agreement with which meant that the offer had been retracted"
"(1). In this Act "shop worker" means an employee who, under his contract of employment, is or may be required to do shop work. (2). In this Act "shop work" means work in or about a shop F1…on a day on which the shop is open for the serving of customers. (3). Subject to subsection (4), in this Act "shop" includes any premises where any retail trade or business is carried on. (4). Where premises are used mainly for purposes other than those of retail trade or business and would not (apart from subsection (3)) be regarded as a shop, only such part of the premises as— (a)is used wholly or mainly for the purposes of retail trade or business, or (b)is used both for the purposes of retail trade or business and for the purposes of wholesale trade and is used wholly or mainly for those two purposes considered together, is to be regarded as a shop for the purposes of this Act."
"(1). Where a shop worker or betting worker gives his employer an opting-out notice, the contract of employment under which he was employed immediately before he gave that notice becomes unenforceable to the extent that it— (a)requires the shop worker to do shop work, or the betting worker to do betting work, on Sunday after the end of the notice period, or (b)requires the employer to provide the shop worker with shop work, or the betting worker with betting work, on Sunday after the end of that period. (2). Subject to subsection (3), any agreement entered into between an opted-out shop worker, or an opted-out betting worker, and his employer is unenforceable to the extent that it— (a)requires the shop worker to do shop work, or the betting worker to do betting work, on Sunday after the end of the notice period, or (b)requires the employer to provide the shop worker with shop work, or the betting worker with betting work, on Sunday after the end of that period. …."
"….. (3) A shop worker or betting worker who is dismissed shall be regarded for the purposes of this Part as unfairly dismissed if the reason (or, if more than one, the principal reason) for the dismissal is that the shop worker or betting worker gave (or proposed to give) an opting-out notice to the employer."