Urine testing (current trackworker)
When I hired out 5 years ago it was urine. But as i currently understand it, you must submit a hair sample.
For the Coach Cleaner position in Chicago, they do a hair test immediately after the interview if they decide to hire you on the spot.
Urine or blood should be the only way i think would be adviseable, randomly.
Hair... It's cool did love to work for you...
Background check goes back at least 7 years or more. They do verify education, and do check employment references. They also do a hair test and a UA. It is an extensive process.
They take both now
Hair and urine test
I did a hair and urine screen and abackground check.
Hair follicle as of 2-2018 atleast for the position I applied for.