1. to work excessively hard; to labor beyond what is necessary or healthy
Usage: third-person singular present tense of 'overlabour'; chiefly British spelling; American English typically uses 'overlabor'
2. to elaborate or develop (a point, idea, or argument) excessively; to belabor
Usage: third-person singular present tense of 'overlabour'; chiefly British spelling

Examples

• She overlabours every detail in her writing, making her essays unnecessarily long.
• The author overlabours the point about climate change throughout the entire chapter.
• He overlabours himself with work and rarely takes a day off.
• The speaker overlabours the obvious, losing the audience's attention.
• Workers who overlabour risk burnout and health problems.
• The director overlabours the emotional scenes, making them feel melodramatic.