[header] How to excuse yourself from work [title] Tell your boss you are feeling sick. [step] Saying you're sick is the classic way for getting out of work. Whether you're already at work and you need to leave, or you are calling in sick that day, saying you are ill is a pretty good method. 
The important thing is not to use this excuse very often, or people may become concerned about your health. [substeps] You might say, " i think i have a bit of a stomach bug.