Jas 5, 4-6 You have lived on earth in luxury and pleasure

(Jas 5, 4-6) You have lived on earth in luxury and pleasure
[4] Behold, the wages you withheld from the workers who harvested your fields are crying aloud, and the cries of the harvesters have reached the ears of the Lord of hosts. [5] You have lived on earth in luxury and pleasure; you have fattened your hearts for the day of slaughter. [6] You have condemned; you have murdered the righteous one; he offers you no resistance.

(CCC 2409) Even if it does not contradict the provisions of civil law, any form of unjustly taking and keeping the property of others is against the seventh commandment: thus, deliberate retention of goods lent or of objects lost; business fraud; paying unjust wages; forcing up prices by taking advantage of the ignorance or hardship of another (Cf. Deut 25:13-16; 24:14-15; Jas 5:4; Am 8:4-6). The following are also morally illicit: speculation in which one contrives to manipulate the price of goods artificially in order to gain an advantage to the detriment of others; corruption in which one influences the judgment of those who must make decisions according to law; appropriation and use for private purposes of the common goods of an enterprise; work poorly done; tax evasion; forgery of checks and invoices; excessive expenses and waste. Willfully damaging private or public property is contrary to the moral law and requires reparation. (CCC 2434) A just wage is the legitimate fruit of work. To refuse or withhold it can be a grave injustice (Cf. Lev 19:13; Deut 24:14-15; Jas 5:4). In determining fair pay both the needs and the contributions of each person must be taken into account. "Remuneration for work should guarantee man the opportunity to provide a dignified livelihood for himself and his family on the material, social, cultural and spiritual level, taking into account the role and the productivity of each, the state of the business, and the common good" (GS 67 § 2). Agreement between the parties is not sufficient to justify morally the amount to be received in wages.