PDFWAC 192-320-010
When is experience transferred to a successor employer?
(1) Any benefits paid which are based on wages paid by the predecessor employer before the transfer of ownership must be charged to the successor employer. Just as the successor employer gets the organization, trade, business, assets, and experience of a predecessor employer as of the date of transfer, it must also get the benefit charges for past, current, or future claims connected to the predecessor employer (or a part of the predecessor employer that can be singled out) prior to the transfer.
(2) Once experience has been transferred, it becomes the successor employer's experience. It must be used to decide the successor's rates for any rate year that follows the year in which the transfer occurs. (There is an exception when, following the transfer, the successor does not have enough experience to be a qualified employer under RCW 50.29.010(6).) Since the transferred experience belongs to the successor employer, it may no longer be used to compute rates for the predecessor employer for rate years that follow.