| Term | Definition |
| blue collar workers | craft, manufacturing, and nonfarm laborers |
| white collar workers | office workers, sales people, and other highly trained individuals |
| service workers | those who provide services directly to individuals |
| unskilled workers | those whose jobs require no specialized training |
| semiskilled workers | those whose jobs require some training |
| skilled workers | someone who has has learned a trade through vocational school or as an apprentice |
| professionals | those with college degrees and usually additional training |
| labor union | an association of workers organized to improve wages and working conditions |
| strike | work stoppage by workers to force employers to meet worker demands |
| craft union | union made up of skilled workers in a specific trade |
| industrial union | union made up of workers regardless of skill level |
| closed shop | company that would only hire union members; now illegal |
| union shop | company in which new employees must join union after being hired |
| agency shop | company in which new employees are required to pay union dues, but not required to join union |
| right-to-work laws | makes union shops illegal in some states |
| AFL-CIO | large international union |
| collective bargaining | process by which unions and employers negotiate the terms of employment |
| mediation | when a neutral party in a labor dispute steps in to help sides work to a compromise |
| arbitration | when both sides of a labor dispute submit their case to a third party that issues a final, legally binding decision |
| picketing | workers carrying signs in front of workplace that state their disagreement with their employer |
| boycott | when striking unions urge the public not to purchase the goods of the employer |
| lockout | employer refuses to let workers come to work to get workers to agree to a new contract |
| injunction | a legal order that the president can order to get striking workers to go back to work |
| civilian labor force | total number of people 16 years old or older who are either employed or looking for work |
| minimum wage law | law that sets the lowest hourly wage that can be paid to workers |