Definition of "overwork" []

• To force to work too hard or too long. (verb-transitive)
• To rework to excess: overwork a speech. (verb-transitive)
• To use too often: "'Vulnerable' and 'volatile' were the most overworked adjectives of the '70s” ( David Ansen). (verb-transitive)
• To decorate the entire surface of. (verb-transitive)
• To work too long or too hard. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "According to information, because of long-term overwork, vice mayor Wang Lijun is highly stressed and in poor health."
• "Remove Man from the scene, and the root cause of hunger and overwork is abolished for ever."
• "It’s also likely false, as overwork is a regular problem for TAs."