Job 7:2 Midrash

כְּעֶ֥בֶד יִשְׁאַף־צֵ֑ל וּ֝כְשָׂכִ֗יר יְקַוֶּ֥ה פָעֳלֽוֹ׃

As a servant that eagerly longeth for the shadow, And as a hireling that looketh for his wages;