work-to-rule
noun /ˌwɜːk tə ˈruːl/
/ˌwɜːrk tə ˈruːl/
[usually singular]- a situation in which workers refuse to do any work that is not in their contracts, in order to protest about something
compare go-slow see also work to rule按章工作(为表示抗议而拒绝做超出合同规定的工作)