Missouri: Ameristar St. Charles says furloughs could become permanent for up to 947 workers Jacob Barker, St. Louis Post-Dispatch · May 27, 2020 at 7:00 am After closing along with the state’s other casinos March 17, the Ameristar Casino now says it may make furloughs permanent layoffs for as much as 60% of its workforce. The casino, owned by Boyd Gaming of Las Vegas, filed a Warn notice with Missouri officials Friday indicating as many as 947 employees could be affected. The Ameristar in Kansas City also filed notice with the state that as many as 578 employees there could be affected. Ameristar St. Charles said it could not determine exactly how many employees it would lay off but said it expected between 25% and 60% of employees to be laid off between July 1 and July 14. For employees who aren’t laid off, the casino said their furloughs may now last longer than six months.