i had an interview and was told i have a restricted rehire status and i have to work somewhere for at least 6 months. i am working somewhere but i am getting paid like under the table sort of & i plan to reapply again in 6 months but will i run into a problem & how would they know if i have worked for 6 months, will i have to bring like an invoices or something ? or like a notarized letter stating i've been employed there ?