I haven't hired a single employee yet. I just create a big family and send them all over to run and manage my business. I haven't had any issues with Sims not buying my products, and I have a bakery. Perhaps it's one of the most recent patches. I haven't played for about a month now.
I recommend creating a larger family and manage your business that way. Also--try to avoid restocking items. EXAMPLE: You can make a pie for $10 and then decorate it for $30. Total cost $40. If it's perfect quality, sometimes they sell for absurd amounts, like, $1000 at your bakery, depending on how high level the pie is. If you restock the pie directly at the store, it costs around $300 to restock. I just remove the restock sign, send them home and re-bake all my goods for the next day. Much more profitable... of course, need to figure out why none of your stuff is selling first... sorry.
