Overworks rhymes with:
quirks, work's, works, works', berkes, birkes, birks, burke's, burkes, burks, clerk's, clerks, clerks', declerck's, declercq's, declerk's, declerque's, deklerk's, derks, dircks, dirkes, dirks, dirkse, irks, jerks, kirk's, kirks, klerk's, lurks, merc's, merck's, percs, perks, quirks, smirks, turks, work's, works, works'
Overworks sounds like:
o'berg, oberg, oberhaus, oberweis, obverse, offer's, offerers, offers, opera's, operas, oppress, oppresses, oprah's, ovaries, overcash, overcook, overcooks, overhears, overreach, overreaches, overs, oversaw, oversea, overseas, oversee, oversees, oversize, oversizes, overuse, overuses, overwork, oviparous, ovoviviparous