| Labored breath | 14 |
| Labored at a loom | 17 |
| Labored | 7 |
| Laboratory vessels | 18 |
| Laboratory vessel | 17 |
| Laboratory utensils | 19 |
| Laboratory tubes | 16 |
| Laboratory tube (Var.) | 22 |
| Laboratory tube | 15 |
| Laboratory task | 15 |
| Laboratory substance | 20 |
| Laboratory sessions | 19 |
| Laboratory people | 17 |
| Laboratory need | 15 |
| Laboratory medium | 17 |
| Laboratory measuring tube | 25 |
| Laboratory maze runners | 23 |
| Laboratory maze navigators | 26 |
| Laboratory maze critters | 24 |
| Laboratory implement | 20 |
| Laboratory heating device | 25 |
| Laboratory heater | 17 |
| Laboratory gel | 14 |
| Laboratory fluid | 16 |
| Laboratory example | 18 |
| Laboratory device | 17 |
| Laboratory containers | 21 |
| Laboratory cleaner | 18 |
| Laboratory chemical | 19 |
| Laboratory burners | 18 |
| Laboratory activities | 21 |
| Laboratorio animal | 18 |
| Laboratories that introduced Tylenol | 36 |
| Laborare est ___ (to labor is to pray) | 38 |
| Laborare est ___ (Masonic motto) | 32 |
| Laborare est ___ | 16 |
| Labor; struggle | 15 |
| Labor/management go-between who's not right? | 48 |
| Labor-union tactic | 18 |
| Labor-union initials | 20 |
| Labor-union chapter | 19 |
| Labor-management problem, or an alternate title for this puzzle | 63 |
| Labor-management negotiator? | 28 |
| Labor-management arrangement | 28 |
| Labor-contract terms | 20 |
| Labor, e.g.: Abbr. | 18 |
| Labor's protective agcy. | 28 |
| Labor's partner, in a garage bill | 37 |
| Labor's partner | 19 |
| Labor's counterpart: Abbr. | 30 |
| Labor ___ (childbirth woes) | 27 |
| Labor __ vincit: Oklahoma motto | 31 |
| Labor with vigor | 16 |
| Labor unrest | 12 |
| Labor union's concern | 25 |
| Labor union founded in 1857 | 27 |
| Labor union foe | 15 |
| Labor union | 11 |
| Labor trailer | 13 |
| Labor strenuously | 17 |
| Labor slavishly | 15 |
| Labor site for Hercules | 23 |
| Labor secretary under the first George Bush | 43 |
| Labor secretary Solis | 21 |
| Labor Secretary Elaine | 22 |
| Labor savers | 12 |
| Labor saver | 11 |
| Labor safety org. | 17 |
| Labor room laborer | 18 |
| Labor result, often | 19 |
| Labor result, about half the time | 33 |
| Labor result | 12 |
| Labor relations class? | 22 |
| Labor protest | 13 |
| Labor production? | 17 |
| Labor party? | 12 |
| Labor Party member, maybe | 25 |
| Labor pains? | 12 |
| Labor pain? | 11 |
| Labor package? | 14 |
| Labor over | 10 |
| Labor output? | 13 |
| Labor outfits | 13 |
| Labor organizer? | 16 |
| Labor organizer's cry | 25 |
| Labor organizations | 19 |
| Labor organization | 18 |
| Labor org. since 1935 | 21 |
| Labor org. in Detroit | 21 |
| Labor org. founded in Chicago in 1905 | 37 |
| Labor org. founded in 1938 | 26 |
| Labor org. founded in 1900 | 26 |
| Labor org. based in Detroit | 27 |
| Labor org. | 10 |
| Labor or Justice, e.g. (Abbr.) | 30 |
| Labor on the docks | 18 |
| Labor of making it | 18 |
| Labor mate, on an invoice | 25 |
| Labor management? | 17 |
| Labor management class? | 23 |