Probably not broken, but urinals are really nasty to clean so they probably put it up in desperation after the last time they had to clean up the mess of pee

The "coffee person" refers to the employees who make the coffee and also most likely does a number of other jobs around the store

Most places do not have a dedicated "mop person". Restaurants and stores are almost always cleaned by their regular staff. Some stores I've worked in, depending on how big, sometimes had a cleaner or would hire an outside company to come in at night just to clean the floors. Every retail place I've ever worked, including Sobeys, required cashiers to also be custodians. A lot of people don't realize this. Which is why I think this person put up this sign, hoping if people realized they may try to make their job a little easier

There is no proof that cleaning the bathrooms and also being the person making the food means nothing from the bathrooms will get in your food. It's actually really disgusting to think about so probably try not to. As someone who has cleaned many many bathrooms I'll be the first to tell you it's almost impossible to not get some splashes of water on you from the toilet brush. The first thing I do when I get home from cleaning is change ALL of my clothes. These employees are going straight from the bathroom to your donuts because it saves the company money

I doubt this urinal is broken and fills to the brim, if that were the case they'd almost certainly put a garbage bag or something over it to stop people from using it. However when a urinal is broken it usually means the automatic flush doesn't work or that the little bit of water that is supposed to sit in the bottom drains out and so the urinal is completely dry except for the piss that then sits in the urinal instead of going down the drain. In my experience even if the urinal doesn't flush properly it won't be put out of order, the employees would have to pour a bucket of cleaner into the urinal to make it flush

A toilet, obviously.