What to call someone who appears never to sleep and is always on duty? [closed]
What do I call someone who appears never to sleep, always responding to emails etc whatever the time of day?
I would call them vigilant:
- keenly watchful to detect danger; wary
- ever awake and alert; sleeplessly watchful.
The word conjures up images of guards ready to respond to danger or trouble.
Depending on context you may use ,"a type A guy" "a workaholic" or "an automaton"
type A personality Type A individuals are described as ambitious, rigidly organized, highly status conscious, can be sensitive, care for other people, are truthful, impatient, always try to help others, take on more than they can handle, want other people to get to the point, proactive, and obsessed with time management. People with Type A personalities are often high-achieving "workaholics" who multi-task, push themselves with deadlines, and hate both delays and ambivalence.
a workaholic is a person who chooses to work a lot : a person who is always working, thinking about work.
an automaton behaves or responds in a mechanical way, a person who acts mechanically or leads a routine monotonous life.
Tireless
Adjective - Having or showing a capacity for persistent effort; not tiring or relenting.