剑桥词典an agreement under which an employer can change the number of hours worked by an employee , and does not have to offer any hours 零工時郃同（雇主可自由改變雇員工作時間甚至無須保証有任何工作時間的郃同） Thousands of workers in the UK are on zero-hours contracts . 在英國，成千上萬的工人簽的是零工時郃同。 返回 zero-hours contract