The opposite of "contributes work" can be interpreted in different ways depending on context. In terms of work or labor, antonyms can include terms like "slacks off," "shirks responsibilities," or "avoids tasks." Another antonym may be inaction, meaning a lack of contribution or productivity. In a more specific context, antonyms can vary, such as "hindering progress," "obstructing development," or "creating obstacles." It's important to note that the appropriate antonym will depend on the intended meaning of "contributes work," whether it refers to participation, effort, or output.