Those of you considering COMA should be sure to read the COMA contract sections beforehand, as well as the sections discussing longevity and seniority on a LOA. You will continue to accrue seniority, but not longevity. Seniority is for bidding. Longevity is for pay and benefits. Get it?
In other words, if you take an LOA, instead of getting your raise and extra week(s) of vacation on your anniversary date, it will be extended by the amount of leave you took. Same goes for probation if you are still on it.