Upon the transfer of a business as a going concern as contemplated in section 197(1)(a) of the Labour Relations Act, workers are automatically transferred to the new employer by operation of law, and the new employer is substituted in the place of the old employer in respect of all contracts of employment, regardless of whether the transferor and transferee employers agreed that the workforce would be transferred as part of the transaction. Whether a business has been transferred as a going concern is an objective question of fact to be determined having regard to all the circumstances of each transaction, including transfer of assets, whether workers are taken over, whether customers are transferred, and whether the same business is carried on. The absence of agreement between employers regarding transfer of workers does not prevent a finding that a transfer of business as a going concern has occurred. Section 197 has a dual purpose: to protect workers against loss of employment AND to facilitate the transfer of businesses as going concerns, thereby balancing the interests of workers and employers consistent with the constitutional right to fair labour practices under section 23(1) of the Constitution.