Picket line pushes for union (The Hawk Eye)
Union members picketed Friday at the nonunion shops of Brockway Mechanical & Roofing Co., promoting their efforts to organize the 20–year–old contractor.

If it's a big deal, get it in writing (Fort Worth Star-Telegram)
If you buy a product without signing a contract and the deal turns sour, resolving the matter can be difficult.