clock watcher(n = noun.person) - a worker preoccupied with the arrival of quitting time;
is a kind of bum, do-nothing, idler, layabout, loafer

against the clock, alarm clock, ammonia clock, analog clock, around the clock, atomic clock, biological clock, bird watcher, caesium clock, clock, clock dial, clock face, clock golf, clock in, clock off, clock on, clock out, clock pendulum, clock radio, clock time, clock tower, clock up, cuckoo clock, digital clock, electric clock, fire watcher, girl watcher, grandfather clock, longcase clock, pendulum clock, port watcher, round the clock, shepherd's clock, spacecraft clock time, stream clock, system clock, time clock, turret clock, vase clock, wall clock, watcher, water clock