The paper studies the impact of altruism on Agent's motivation in career concerns model. The paper shows the new … channel of interaction between intrinsic and extrinsic motivation: while the literature usually argues that intrinsic … motivation can be crowded out by the extrinsic incentives, I show that crowding-out effect can go in the opposite direction …

the effects by income source can be explained by social norms. Our first experiment induces random variation in both … earned income and windfall bonuses and shows that only bonuses increases charitable donations. The second experiment uses an … elicited in the second experiment match the donation patterns in the first experiment both overall and across subject …