053-21 Wyo. Code R. § 21-1
(a) The term "Mass Separation" means a separations (permanently or for an indefinite period of time or for an expected duration of seven or more days), at or about the same time and for the same reason, of 20 or more workers employed in a single establishment.
(b) An employer shall file with the division in writing or by using the internet website approved by the Division, a mass separation notice which must include the layoff date and the period and amount of termination, severance, sick, or earned vacation payments, where applicable, for each employee. Such notice should be filed as soon as the employer has reason to believe a mass separation will take place, but shall be filed not later than five calendar days after such separation.
053-21 Wyo. Code R. § 21-1
Amended, Eff. 6/29/2018.