24 hour
247
alarm
background
blue
business
calendar
clock
concept
countdown
day
deadline
employee
employment
engineer
engineering
facility
factory
graphic
hardhat
holiday
hour
hours
hurry
industrial
industry
management
manufacture
manufacturing
metalwork
minute
occupation
plant
production
speed
stopwatch
technician
time
timeless
timer
urgency
urgent
warehouse
watch
welfare
work
worker
working hours
workshop