Another benefit is the clear reduction in legal liability that a business can achieve by using a simple employment agreement template. When you have clear requirements for both parties written in a signed document this eliminates a lot of the ambiguity and costs associated with lawyers and courts if you are ever sued by a current or former employee (or worse yet, the employees union). As long as the agreement follows the law and the employee was competent at the time of signing, most courts will honor its terms. This can get you out of a very expensive situation!
On the other hand, a detriment of using a pre-written template is that it may not handle more complex jobs or specific types of contract projects where there are a lot of detailed deliverables. Obviously, a basic form contract is unlikely to cover all the bases for things like international joint ventures, multi-level sales agency relationships, or insurance services. These are agreements where the costs of an attorney are justified.