1
1st
1st may
background
banner
business
cartoon
celebration
character
concept
construction
creative
day
design
employers
employment
engineer
flat
freedom
greeting
group
hand
happy
holiday
illustration
industrial
industry
international
job
labor
labor day
labour
labour day
man
may
national
occupation
people
poster
professional
socialism
strong hand
symbol
team
work
worker
workers
workers day
world