N.C. Gen. Stat. § 168A-12: Statute of limitations.

A civil action regarding employment discrimination brought pursuant to this Chapter shall be commenced within 180 days after the date on which the aggrieved person became aware of or, with reasonable diligence, should have become aware of the alleged discriminatory practice or prohibited conduct. A civil action brought pursuant to this Chapter regarding any other complaint of discrimination shall be commenced within two years after the date on which the aggrieved person became aware of or, with reasonable diligence, should have become aware of the alleged discriminatory practice or prohibited conduct. (1985, c. 571, s. 1; 1999-160, s. 1.)