If you had a job interview to be a mental health therapy aid when would they contact you ? And how would they contact you (letter, phone call, email) ?

No later than a month you should receive a letter scheduling your orientation depending how you did in the interview.

They'll send a canvassing letter to see if you're still interested.

Oops I meant to say after the interview process is done when/how do they contact you to inform you if you did not get the job. @AsarLB1031