STD/LTD

hello, I am an employee at carvana, just curious on of anyone has any insite into the time frame for short term and long term disability, my Forman was out on disability at the end of the year I wanna say end of November time frame, but they stopped paying him disability on the new year. when he called they said the DTD and LTD only run untill the end of the calender year. I cant find anything on time frames in workday and when going to elect one or the other it doesn't give you an idea on how long they last