Companies fall into three general categories: Once a sim has put up an Open Sign to indicate when they're available to take customers and the equipment to transact a sale, virtually any object or activity in the game can potentially be turned into a profitable enterprise. This can include running a shop out of their own home, or setting up a dedicated storefront on a community lot they've purchased.

Companies Player-controlled characters can elect to open a new business on any lot they own by contacting the local business registry. This expansion pack also includes the Influence and Attraction dynamics that were first introduced in University and Nightlife, respectively. Open for Business requires the original Sims 2 in order to install, but although the other expansion packs in the series can greatly expand the variety of possible companies, none of them are necessary for this one to function. Sims can now purchase their own community lots, hire and fire employees, attempt to build up a reputable business with a loyal clientele, and enjoy an array of different perks that come with their success.

Overview While the two previous expansions to The Sims 2 franchise sought to open up new academic and social possibilities, Open for Business sets its sights on expanding the game's professional side by allowing the inhabitants to start up their own companies.