ACROSS
 1. <applicant> JOBSEEKER = JOKER outside BS _E _E
 6. M + ←ATLA_← = MALTA <Mediterranean island>
 9. <this indicates lack> CARET = E inside CART
10. Y_G G_D RAIL outside S = YGGDRASIL <ash>
11. SANITY outside L_ I_ = SALINITY <sea property?>
12. ARROW after Y = YARROW <herb>
14. <dairy product> BRIE = B_R_I_E_
15. <national> ENGLISHMAN = (NHL GAMES IN)*
18. <respect. ADMIRATION = MAID* RATION
19. _N + ODE = NODE <point of connection>
21. <trumpet> SHOFAR = (SO FAR) outside _H_
23. <got sick again> RELAPSED = REED outside LAPS
26. <sign> AUTOGRAPH = (PARA OUGHT)*
27. U SING = USING <on drugs>
28. N USE outside R = NURSE <medical worker>
29. <being late> TARDINESS = TAR DINES + _S

DOWN
 1. J_ + ↺SACK↺ = JACKS <test of dexterity>
 2. <Be> BERYLLIUM = (BY MILLER)* outside _U_
 3. <size> EXTENT = EX TENT
 4. <green-glowing mineral> KRYPTONITE = K (IN POTTERY)*
 5. RAG + A = RAGA <melodic form>
 6. ←RUM← MAN + SK = MURMANSK <Arctic port>
 7. <failure> LOSER = [-c]LOSER
 8. ALL ONCE outside W A = ALLOWANCE <regular payment>
13. <in chorus> ALTOGETHER = ALTO + G ETHER
14. <foreman> BOATSWAIN = B OATS + WAIN
16. MOO NINE outside S_H = MOONSHINE <other liquor>
17. INTEGRAL* = TRIANGLE <part in orchestra>
20. <men play women in this> KABUKI = K_ A_ B_ + UK I
22. (.r)O A TER(r.) = OATER <Western>
24. EG inside DAS = DEGAS <impressionist>
25. <way of walking> GAIT = "GATE"