Explain the how the metaphor “You can’t eat the orange and throw the peel away” connects to the play

You can't eat the orange and throw the peel away - a man is not a piece of fruit.

Willy, act II

This is Willy's articulation of Linda's "attention must be paid" speech. But Willy's appeal is not for some abstraction of attention or dignity. He is arguing directly to his employer that there must be responsibility taken for employees. Willy gave his youth to the company, and now the company must take care of him.