“All in” for SWA AMFA represented members is 15 years. Here’s the language directly from their contract, Longevity.
“At the conclusion of each year of category seniority an Employee accrues, his pay will be increased by $0.10/hour up to ten (10) years. After completing eleven (11) years, Employees will receive an additional $.15/hour per year up to $1.60/hour. Employees completing fifteen (15) years and thereafter will receive $1.75/hour. For purposes of this section only, service will be defined as service within a group covered by a collective bargaining agreement between Southwest Airlines and the Aircraft Mechanics Fraternal Association. This will not affect the wage rates as set forth in Article 15 or any other provisions relating to seniority in this Agreement. Overtime, holidays, jury duty, funeral leave, sick leave, on the job injury leave and vacation time will be computed on the basis of regular rate of pay plus shift differential, longevity and license premium, if any”