I’ve worked with lots of testers who often take on more work than they should because they have the idea that the work they are taking on is what testers should be doing. It’s often not a question of whether they should do this work given their other constraints, but rather just a focus on how they can regardless of those constraints. Granted, many companies seem to foster this by job descriptions that suggest someone needs to be a developer, DBA, business analyst, and tester all in one. A main aspect of my job description as a quality assurance and test practitioner comes down to defining a role, usually separate from the relatively anodyne job descriptions we’re all used to.