24Secondly, in order to determine whether those conditions are met, it is necessary to consider all the facts characterizing the transaction in question, including the type of undertaking or business, whether or not the business's tangible assets, such as buildings and movable property, are transferred, the value of its intangible assets at the time of the transfer, whether or not the majority of its employees are taken over by the new employer, whether or not its customers are transferred and the degree of similarity between the activities carried on before and after the transfer and the period, if any, for which those activities were suspended. It should be noted, however, that all those circumstances are merely single factors in the overall assessment which must be made and cannot therefore be considered in isolation (judgment in Spijkers, cited above, paragraph 13).