compliant - Being willing to do what one is asked to do, following set of rules, regulations, and standards.

Though most people don't enjoy paying taxes, they are compliant either because they feel it is right, or because they fear getting caught if they cheat.
expendable - Not essential, able to be used up or sacrificed without significant loss, easily replaced or not necessary for long-term use.

The workers didn't feel any sense of job security, and they felt expendable, because they were fired whenever the demand for the factory work slowed down.