"... if different rights and liabilities under a contract are accepted by an employee and there is an economic, technical or organisational reason entailing the difference, then it must be that the agreement as to the new rights and liabilities operates as an effective variation of the contract. ... We did not think that it was intended that an employer who dismisses employees should enjoy the advantage of a defence closed to an employer who does not dismiss."
"... If the old terms and conditions continued by virtue of the Regulations, the time might nonetheless come when the applicants affirmed the new contracts notwithstanding that they were not after the transfer expressly agreed. The parties to a contract may always vary its terms."
"...After the transfer, they worked them [the contracts] without protest, apparently accepting the new structure, certainly accepting the new salaries, job titles and duties, and not protesting the respondents' failure to make the additional payments they said they were entitled to."
"...merely the passage of time, even a very long time: the applicants actively carried out very different jobs from the former ones, and co-operated in a very different disposition of work and an operation on a much smaller scale. Their actions signified their acceptance of the new contracts."
"... A relevant transfer shall not operate so as to terminate the contract of employment of any person employed by the transferor in the undertaking or part transferred but any such contract which would otherwise have been terminated by the transfer shall have effect after the transfer as if originally made between the person so employed and the transferee."
"The transferor's rights and obligations arising from a contract of employment or from an employment relationship existing on the date of the transfer within the meaning of Article 1(1) shall, by reason of such transfer, be transferred to the transferee."
"As was stressed above, the purpose of Directive 77/187/EEC is to ensure that the rights resulting from a contract of employment or employment relationship of employees affected by the transfer of an undertaking are safeguarded. Since this protection is a matter of public policy, and therefore independent of the will of the parties to the contract of employment, the rules of the Directive, in particular those concerning the protection of workers against dismissal by reason of the transfer, must be considered to be mandatory, so that it is not possible to derogate from them in a manner unfavourable to employees.
"...Thus the Directive can be relied on only to ensure that the employee is protected in his relations with the transferee to the same extent as he was in his relations with the transferor under the legal rules of the Member State concerned.
"An employee cannot waive the rights conferred upon him by the mandatory provisions of Directive 77/187/EEC even if the disadvantages resulting from his waiver are offset by such benefits that, taking the matter as a whole, he is not placed in a worse position. Nevertheless, the Directive does not preclude an agreement with the new employer to alter the employment relationship, insofar as an alteration is permitted by the applicable national law in cases other than the transfer of an undertaking."
"Where the total amount of any wages that are paid on any occasion by an employer to any worker employed by him is less than the total amount of the wages that are properly payable by him to the worker on that occasion (after deductions) then ... the amount of the deficiency shall be treated for the purposes of this Part as a deduction made by the employer from the worker's wages on that occasion."
"The parties to an employment relationship are not permitted to alter the terms of that relationship at any time (whether by variation or affirmation) if the reason which brings about that alteration is the transfer of an undertaking."
"Any provision of any agreement (whether a contract of employment or not) shall be void in so far as it purports to exclude or limit the operation of Regulation 5 ..."