You want a sub-contractor agreement not a work order. It's a contract. Do a search for that, there are a lot of companies that sell good versions if you can't find one for free.
Thanks Mike. We have a sub contractor agreement that was provided by our lawyer. Unfortunately, the damn thing is too lengthy and cumbersome. My thoughts are to have this as a "Master Agreement" signed on file in our office. Then for each job have a work order that has details specific to that job (materials, unit price, labor, etc). This form could then reference the "Master Agreement".
I slapped together this form this morning but plan to tweak it. Maybe have one specific to each trade with common items (ie tile will have lines for sf of floor tile, sf of wall tile, lf of accents, etc) as well as blank lines for additional items.
Any thoughts or ideas are appreciated.