"21. None of the Claimants are or have ever been required or expected to volunteer for overtime shifts and all of the Claimants are and have always been completely free to choose whether or not to work any voluntary overtime shifts."
"Pay during annual leave will include regularly paid supplements, including any recruitment and retention premia, payments for work outside normal hours and high cost area supplements. Pay is calculated on the basis of what the individual would have received had he/she been at work. This would be based on the previous three months at work or any other reference period that may be locally agreed."
"1. Member States shall take the measures necessary to ensure that every worker is entitled to paid annual leave of at least four weeks in accordance with the conditions for entitlement to, and granting of, such leave laid down by national legislation and/or practice. 2. The minimum period of paid annual leave may not be replaced by an allowance in lieu, except where the employment relationship is terminated."
"41. All the Respondent's witnesses acknowledged that it was not open to any of the Claimants to leave their job at the end of the shift if they were in the middle of an emergency call, be it on the road to an accident or in a call centre. It was an essential requirement of their contractual role that they remain on that shift and conclude the matter that they were dealing with. …"
"42. … This is by its very nature voluntary. There is no contractual obligation for the Claimants to perform it. Although it was submitted on the [Claimants'] behalf that the Respondents rely upon it the tribunal is satisfied that it must have in place other options in case the take-up for voluntary overtime is not sufficient to cover all its obligations. As found, this could be by way of agency staff or private ambulances. As an examination of the time sheets and further information demonstrated there is no pattern to the voluntary overtime. It varies depending on the nature of the role, the type of work undertaken and the needs of the organisation. It is not part of pay for the purposes of calculating the [Claimants'] annual leave."
"44. … in a case where the pattern of work, though voluntary, extends for a sufficient period of time on a regular and/or recurring basis to justify the description "normal", the principle in Williams applies and it will be for the fact-finding tribunal to determine whether it is sufficiently regular and settled for payments made in respect of it to amount to normal remuneration."
"45. In so far as the test seeks an intrinsic or direct link to tasks which a worker is required to carry out (stressing those last four words) …"
"44. Despite the subtlety of many of the arguments, the essential points seem relatively simple to me. "