So can using devices like pocket reminder cards with simple messages or messages in table form. Reinforce your written communications of expectations with oral communications. Reinforce your formal communications with informal ones. Remember that you need to state expectations for the performance you want, but you also need to be clear about the consequences of performance that's beyond or not quite up to standard. Frequent and Usable Feedback People like to know how they're doing.
Feedback is how they find out.
Other folks prefer to be left alone most of the time to do their work. You have to know who needs what and in what situations. The idea is to make lots of small course corrections on the way to the clear target you've established with your expectations. Feedback also has to be usable. In most situations, that means you want feedback as close to the performance as possible.