We projected that mindfulness has a negative association with the degree to which workers are usually bored by their occupations by combining previous research on task monotony with existing theory on mindfulness. We projected additionally that this decrease in employee ennui would be related to subsequent outcomes in the form of employment attitudes (such as job satisfaction and intentions to leave the company), as well as task performance. In order to shed light on the intricacy of the relationship between mindfulness and task performance, which has mostly been addressed through the use of subjective supervisor ratings up to this point, we analysed both the objective quality and quantity of task performance. The findings of a study conducted on 174 blue-collar employees working for a Mexican corporation revealed that employee mindfulness was inversely associated to feelings of boredom. In addition, mindfulness had a positive association with work satisfaction and a negative association with intentions to leave a job, with the relationship being partly mediated by boredom. It showed discovered that awareness was a double-edged sword for task performance in boring jobs: mindfulness was positively connected to the quality of task performance, but adversely related to the amount of task performance.