forced labor

:  compelled by force or necessity :  involuntary

:  done or produced with effort, exertion, or pressure

:  expenditure of physical or mental effort especially when difficult or compulsory

:  human activity that provides the goods or services in an economy

:  the services performed by workers for wages as distinguished from those rendered by entrepreneurs for profits

:  to exert one's powers of body or mind especially with painful or strenuous effort :  work

:  to move with great effort

:  to be in the labor of giving birth

:  of or relating to labor

:  of, relating to, or constituting a political party held to represent the interests of workers or made up largely of organized labor groups