What is the proper uniform?

Standard Uniform
Khaki pants (clean, wrinkle free, no cargo pockets)
Running shoes
Company polo (provided by the company), Should be tucked in
Wear a belt
Black and White
Black pants (clean, wrinkle free, not jeans) 
Running shoes
White button down shirt (long sleeve), Should be tucked in
Wear a belt
Vest and tie (only at some jobs, provided by company)
La Palmera
Khaki shorts
Running shoes
Company provided shirt (worn untucked)
Driving Jobs
Depending on the job the driver will either wear the Standard Uniform or Dress Up
Dress Up
Ranges from slacks and collared shirt to suit and tie (no jeans).