Wash. Admin. Code § 192-700-007
For the purposes of employment restoration under Title 50A RCW, hours worked for a predecessor employer will be considered worked for the successor employer as described in 29 C.F.R. Sec. 825.107 and any subsequent amendments to that regulation.
Example: An employee works at a florist called ABC Flower Shop. The business is sold to another entity and is renamed XYZ Flower Shop. The new owner applies for a new universal business identifier and is considered a new employer. The employee is retained and continues to work in a similar job function for the new employer. According to 29 C.F.R. Sec. 825.107 of the federal Family and Medical Leave Act, XYZ Flower Shop is considered a "successor in interest" of ABC Flower Shop. As such, the hours worked by the employee for ABC Flower Shop should be included when considering whether or not employment restoration rights apply to a period of leave taken from XYZ Flower Shop.
Wash. Admin. Code § 192-700-007