The invoice will state clearly that it is for the services rendered in performance under this Agreement and shall reference the Agreement number. Professional Services Contract.This Service Agreement ("Agreement") is effective as of the date of the last authorizing signature affixed hereto. Instructions: This indemnification language is for any contract, whether engineering, architecture, or any other service. Save time and money with PandaDoc. If you're a Washington business that needs to hire employees, use a Washington employment contract template to outline terms of employment. ______ Yes employees supplying work have been retired from a Washington state retirement system. You may like out to check out: How to Terminate an International Contractor? Fill in any blanks in the agreement. A Membermanaged LLC is where all the Members (LLC owners) have the ability to legally bind the LLC in contracts and agreements.