In theory, yes the employees are to wear gloves. But there are still problems/exeptions.
I worked at a fast food restaurant for 3 years, and when I started, I asked if we had to wear gloves when preparing food, i was told that the gloves are more for the Customer's state of mind than actual sanitation...makes sense. For example (ive never done this, but seen it happen) I could have just thoroghly washed my hands then made your burger, but on the contrary, i could be wearing gloves and just scratched my genitals, etc etc...so which is cleaner? Gloves or no gloves?
Either way cleanliness should be the number one priority in a restuarant, but sadly it is often passed up for speed and cheap labor.