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Aircraft mechanic shift differential, by airline

What each contract actually pays for second and third shift, transcribed from the agreement and cited to its page. Aggregator pages for this question are generic boilerplate; the contracts print the number.

Theme
Verified shift differential per US airline mechanic contract.
CarrierShift differential (verified)
American Airlines
“Shift differential (Article 16)”
Shift differentials
shift begins 6:00 a.m.–8:59 a.m.$0.00/hr
the agreement states no differential is received for this shift
source
aa-twu-iam-mr-consolidated-2025 · p.116 · Article 16 — shift differentials
verified 2026-08-10dual-read verified
shift begins 9:00 a.m.–7:59 p.m.$0.51/hr
source
aa-twu-iam-mr-consolidated-2025 · p.116 · Article 16 — shift differentials
verified 2026-08-10dual-read verified
shift begins 8:00 p.m.–5:59 a.m.$0.58/hr
source
aa-twu-iam-mr-consolidated-2025 · p.116 · Article 16 — shift differentials
verified 2026-08-10dual-read verified
relief / days-off coverage$0.61/hr
source
aa-twu-iam-mr-consolidated-2025 · p.116 · Article 16 — shift differentials
verified 2026-08-10dual-read verified
No differential for a shift beginning 6:00 a.m.–8:59 a.m. — that is a verified zero for the day shift, printed in the agreement, not a missing value.
United Airlines
“Shift premium (Article 15.D)”
Shift differentials
shift commences outside first-shift hours$0.51/hr
source
ua-ibt-tech-extension-2023 · p.146 · Article 15.D — shift premium
verified 2026-08-08dual-read verified
shift commences outside first-shift hours (same rule)$0.51/hr
source
ua-ibt-tech-extension-2023 · p.146 · Article 15.D — shift premium
verified 2026-08-08dual-read verified
relief mechanic rotating between shifts$0.58/hr
source
ua-ibt-tech-extension-2023 · p.146 · Article 15.D — shift premium
verified 2026-08-08dual-read verified
Southwest Airlines
“Shift premium (Article 14.10)”
Shift differentials
shift commences outside the 5:00 a.m.–8:30 a.m. window$0.63/hr
source
wn-amfa-mech-cba · p.66 · Article 14, Item 10 — shift premium
verified 2026-08-08dual-read verified
shift commences in the late-evening window (higher premium)$0.71/hr
source
wn-amfa-mech-cba · p.66 · Article 14, Item 10 — shift premium
verified 2026-08-08dual-read verified
Alaska Airlines
“Shift differentials (Article 23)”
Shift differentials
afternoon shift (Paragraph A)$0.65/hr
source
as-amfa-tech-cba · p.104 · Article 28 — Shift Differential
verified 2026-08-10dual-read verified
multiple-shift / relief schedule (2+ shifts)$1.50/hr
source
as-amfa-tech-cba · p.104 · Article 28 — Shift Differential
verified 2026-08-10dual-read verified
A distinct midnight/third-shift rate was not corroborated this round and is not published.
Allegiant Air
“Shift differentials (Article 16.D.2)”
Shift differentials
Swing/second shift (8- and 10-hour schedules)$0.25/hr
source
aay-ibt-mx-cba · p.70 · Article 16.D.2 — shift differentials
verified 2026-08-11dual-read verified
Midnight/third shift (8- and 10-hour schedules)$0.35/hr
source
aay-ibt-mx-cba · p.70 · Article 16.D.2 — shift differentials
verified 2026-08-11dual-read verified
Day/first shift: $0. 12-hour schedules: day $0, midnight $0.35 (16.D.2.ii).
Hawaiian Airlines
“Shift premiums (Article 19.8)”
Shift differentials
Afternoon shift premium (shift starting 11:00 AM to before 5:00 PM)$0.51/hr
Current printed rate — 'DATE OF SIGNING' column of the Clause 19.8 table (36¢ in 2010, 51¢ from 2013).
source
ha-iam-mech-cba · p.79 · Article 19.8/19.9 — shift premiums, Aircraft Mechanic
verified 2026-08-11dual-read verified
Night shift premium (shift starting 5:00 PM or later, before 5:00 AM)$1.00/hr
Current printed rate — 'DATE OF SIGNING' column (43¢ in 2010, 58¢ from 2013, $1.00 at signing).
source
ha-iam-mech-cba · p.79 · Article 19.8/19.9 — shift premiums, Aircraft Mechanic
verified 2026-08-11dual-read verified
Full-time employees only (19.8). Shift premium is included in the calculation of overtime, vacation, sick leave, holidays and other paid leaves. Relief-schedule employees receive a relief premium INSTEAD of shift premium — latest printed rate $0.61/hr ('4/19/2013' column; the 19.9 table prints no DATE OF SIGNING column). Rotating relief employees' premium is treated for pay purposes the same as shift premium.
PSA Airlines
“Shift premiums (Article 25.C — printed as minimum rates)”
Shift differentials
Second shift premium$0.30/hr
source
psa-iam-cba · p.56 · A&P Mechanics scale addendum — shift premiums
verified 2026-08-11dual-read verified
Third shift premium$0.55/hr
source
psa-iam-cba · p.56 · A&P Mechanics scale addendum — shift premiums
verified 2026-08-11dual-read verified
Article 25.C rates are printed MINIMUMS ('the minimum rates paid for all premiums. The Company may raise these rates'). Second shift = schedule starting after 1200; third shift = schedule starting after 2000 (preponderance-of-hours rule applies).
Envoy Air
“Shift differential (Article 4)”
Shift differentials
Shift beginning 1500-1959 (or majority of hours in that window)$0.25/hr
source
envoy-twu-mr-cba · p.14 · Article 4 — license premium, shift differential
verified 2026-08-11dual-read verified
Shift beginning at or after 2000 (or majority of hours after 2000)$0.45/hr
source
envoy-twu-mr-cba · p.15 · Article 4 — premiums (continued)
verified 2026-08-11dual-read verified
Payable for actual hours worked.
Horizon Air
“Shift differential (Article 25)”
Shift differentials
Swing shift$0.25/hr
source
horizon-amfa-tech-cba · p.122 · Article 25 — license premium schedule, shift differential
verified 2026-08-11dual-read verified
Night shift$1.25/hr
Printed schedule: $1.25/hr through May 5, 2027; $1.50/hr from May 6, 2027.
source
horizon-amfa-tech-cba · p.122 · Article 25 — license premium schedule, shift differential
verified 2026-08-11dual-read verified
Printed as floors: 'additional wages no less than as follows' (25.E). Article 25.G: overtime, holiday premium, training and field-trip pay are computed on the All-In Rate (base plus all premiums and differentials the employee is entitled to). Also printed but not yet shown here: Longevity Pay ($0.50/hr at 15-19 yrs, $0.75 at 20+, rising to $1.00 on 2027-05-06) and skill premium provisions (25.H-I) — dual verification queued.

§ opens the citation: document, page, section, verification method and date. Not yet verified means nobody has confirmed it here yet — it is never assumed zero.

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