Happened to me before.
Happened to me before.
I have had this happen too me before, the main thing is let them know as soon as posible, staffing is a big problem with shops.
You are either staffing up for a big job, or just filling a hole? either way you want to pick the best guy you interview into the system.
I rarely offer a job until I have interviewed everyone, unless have mulitple openings, I then will call the men I dont hire and let them know.
So if you are taking another position, likely there is a second man on the list he needs to call before he too finds other employment.
As for drug test, with me I pay for them when they show at the Dr. office, it is not prepaid, if you took uniforms (I dont give out for a week or two)
Back ground checks I pay a service for a year, so not an extra expense. I also will never hold my employees back from improving them selfs.
But if it is just $ you chase there will always be someone wagging a quarter in front of you. There is more to the job than the hourly wage.
Being happy in what you do, and were you are will make your life off the job much better as well.
Good Luck, maybe in a few yrs, with luck you will get to see the other side of the employee, employer relationship. It tends to open eyes......