"Now the employer may also put some into the HSA which you can also tap into to pay medical bills. If they also contribute that may be why they will not do so in advance in case you don't stay the entire year."
Even if an employer contributes to my HSA, they do not contribute from their pocket, it is from my Payroll. Say if my employer deposits $1000 in Sep2016, say my monthly gross pay is $8000, since they paid $1000 to my HSA, my gross will be $7000 only. SO it is my money, not employer's money. Regardless of whether I stay entire year or not, they are contributing to my HSA from my money which is due from them for the work I did for them till THAT DATE.
I hope I am not confusing! :(
