 In 2007 , Burger King announced its " competitive hours " requirement that mandated locations extend their hours of operation to midnight for most of its American locations . Burger King 's reasoning for the changes were necessary to maintain a competitive stand against McDonald 's and Wendy 's . Burger King stated that roughly 60 % of its franchised locations already operated until mid @-@ night , but it sought to have the extended hours of operation cover 100 % of locations in order to begin a nationwide advertising campaign promoting late @-@ night sales . On 1 June 2008 the company amended the directive to require restaurants to stay open until 2 : 00am Thursday @-@ Saturday and open at 6 : 00am Monday @-@ Saturday . At the time of the announcement , Burger King stated it believed the franchise agreement allowed it set minimum hours and that most of it franchisees had agreed to the extended hours of operation . After the deadline passed , Burger King notified its franchises on 3 July that if any of them failed to implement the new policy by 8 July , the franchises would be in default of their agreement . 
