Neat game. I think it does many things right. Exposition is short and catchy, most of the mechanics are explained clearly and the art, ui and sounds are solidly implemented.
I couldn't get past the second level. I wasn't sure what to do with safety. The game said I needed to keep the profit above the red line, but doing so made the employees die so quickly that I couldn't earn enough money, although it felt like was going as fast as I could. I wish I could've seen more of the game.
Still impressive work and good job!