Overwork rhymes with:
magouirk, quirk, quirke, rework, werk, werke, work, berch, berk, berke, berserk, birk, bjerke, bourke, burck, burk, burke, cirque, clerc, clercq, clerk, declerck, declercq, declerk, declerque, deklerk, derk, dirk, erck, erk, ferch, gerk, gerke, herk, irk, jerk, kirch, kirk, klerk, kurk, leclerc, lerch, lurk, magouirk, mcguirk, mcgurk, merc, merck, merk, murch, murk, perc, perk, purk, quirk, quirke, rework, sherk, shirk, sirk, smirk, sterk, sturc, turck, turk, werk, werke, work, yerke, zirk
Overwork 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, overworks, oviparous, ovoviviparous