Contradiction with Proverbs 13:11
This verse suggests that wealth obtained by labor (hard work) is commendable, which aligns rather than contradicts Ephesians 4:28's message against stealing and encouragement to labor.
Proverbs 13:11: Wealth [gotten] by vanity shall be diminished: but he that gathereth by labour shall increase. [by labour: Heb. with the hand]
Contradiction with Ecclesiastes 5:19
This verse highlights enjoying the rewards of one's labor as a gift from God, which supports the idea in Ephesians 4:28 rather than contradicting it.
Ecclesiastes 5:19: Every man also to whom God hath given riches and wealth, and hath given him power to eat thereof, and to take his portion, and to rejoice in his labour; this [is] the gift of God.