QA is an active area regardless of the software methodology used or the size of its development team. There's typically plenty of work that goes into it and, often, more work than fits into a testing cycle. To see a team of QA professionals buzzing along with their busy work is a good sight.
However, being busy is not the same as being engaged. Many testers can be exceptionally productive and stay actively engaged, but many others respond to continuous heavy workloads by "checking out." Though they are supposed to perform tests and fulfill job requirements, they don't care. When you lose your sense of caring or passion, you're disengaged.
Disengagement can be temporary -- it can come and go -- and that can reflect the lifecycle of any software development person. When it stays longer, it's time to re-evaluate QA processes and workloads.
Nevertheless, it is a normal phenomenon. Most QA professionals go through phases where their workload gets too heavy, resulting in negativity and frustration. Most of them work their way through it, either on their own or with the help of mentoring or coaching. Sometimes a new challenge is required to stretch an individual's abilities.
Providing QA testers with new learning opportunities is essential to keeping quality QA team members engaged and productive. It may be comfortable for a company to expect people to perform similar tasks year after year, but it's not realistic. If you're not learning, you become stagnant, no matter how good your job is.
Engaged testers do better work and also contribute ideas for team improvement. Disengaged team members never say anything, except among their friends.
Instead of picking the same person to lead different testing projects, keep changing the assignment. First, ask for volunteers. If there are no new volunteers for the project, then assign a new person. Rotate around a team so everyone gets a chance to show their skills. It's hard to resist picking the same QA professionals as leaders for new projects because you know they'll get that job done. However, try not to fall into that trap because it will result in burned out leaders and resentful, less productive team members.
An effective QA team will always be busy, but it's also critical to keep QA test team members engaged so they do their best work and provide higher value.
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