The 'crew'.
A group of workers are called: Crew
One single person can build an airplane or you can have a group of companies with their workers make individual components to make a single airplane.
A squadron.
Staff
A group of airplanes could be called a "fleet", a "squadron", a "flight" or a "formation".
A boss or an employer
A boss or an employer.
group of people who are protesting about something outside a building, especially a group of workers who are on strike and are encouraging other workers not to work.
Hitler's group was called the Nazi Party, which stands for National Socialist German Workers' Party.
workers
The International Workers Association is an organization of workers formed in 1922. The group had its roots in the 1860's organization of workers called International Working Men's Association.
workers who have a blue collar aka blue collar workers