It was agreed that it was important to measure the quality and difficulty of the work as well as just the hours. Mixed ability teaching requires an extra differential of tutor time. The importance of leadership. A resource room in which was held a copy of every major or current document was one tried and benefical way. Give approval more often - evaluation should praise as well as criticise.
Morale drops more quickly than it rises.
Note that assessment is often hidden, being done at weekends and evenings at home. It is the duty of the Head of Department to create space - if the Head does not do this, no one else will. But it is becoming harder to do. Doing an hours exercise is important, but do not get hung up on it - move on. Consider it may not be worth being transparent - there may be more mileage in being Machiavellian.