clockwatching
clock·watch·ing / ˈklɑkˌwɑtʃɪŋ ; ˈklɔkˌwɔtʃɪŋ /noun UBrE
1. when you often look at a clock to see what time it is because you are bored or want to stop working老是看钟等下班的行为
—clockwatcher noun C