When am i supposed to receive my check after my employer shuts business down without warning?

If you are an employee (not a 1099 worker), then any earned wages must be paid on the next regular payday for earning during that period.  If you haver not been paid, then you will want to contact the Department of Labor.  I recommend trying the North Carolina DOL first.  www.nclabor.com  If the federal DOL has jusrisdiction, then then NC DOL should let you know.