Brian supervised 30 professionals in 5 city libraries. To cut the costs of unnecessary overtime, he issued this one-sentence memo to his staff:

"When workloads increase to a level requiring hours in excess of an employees regular duty assignment, and when such work is estimated to require a full shift of eight (8) hours or more on two (2) or more consecutive days, even though unscheduled days intervene, an employees tour of duty shall be altered so as to include the hours when such work must be done, unless an adverse impact would result from such employees absence from his previously scheduled assignment."

After the 30 copies were sent out, Brians office received 26 phone calls asking for clarification.

How clear in this memo? How should employees respond? How could Brian improve his message?