Trump Plaza Casino Hotel gave layoff notices to about 1,000 employees Monday ahead of an expected Sept. 16 closure, making it the fourth casino to close this year in faltering Atlantic City, New Jersey. The pink slips came as the company that owns the casino, Trump Entertainment Resorts, has begun "reviewing alternatives for the property," the company said. "Although this review has not been completed and no final decision has been made, the company expects that it will terminate the operations of Trump Plaza Hotel and Casino on or shortly after September 16, 2014," the statement said. The seashore casino is one of the poorest performers in Atlantic City, which began the year with 12 casinos. Trump Plaza booked less than half its rooms in the first quarter of 2014, and had the lowest gaming revenue of any of the city's casinos in May, according to state documents. Businessman Donald Trump owns a 10 percent stake in Trump Entertainment Resorts. Atlantic City's casinos have withered under competition from casinos in neighboring states.