Letter of agreement is used between:<\/p>\n
It can be said that such letter defines expectation of both the parties. In order to protect both the parties, it is advisable to add as much information as possible in the letter.<\/p>\n
This information can be related to job duties, quality of services, payment details, deadlines, time periods, schedules, cost of the project etc. Legally letter is valid only when both the parties provide their signatures. In some cases, a signature of the witness is also needed.