Think we are veering away from the point here.
I am guessing LIS based pilots either were
A - Portugese & happy to find a job at home
B - Chose the base to get a quick command
C - got sent there when the (very- for employees ) lucrative MAD base was closed.
Correct me if I am wrong, but, in any case, life in LIS is not so cheap (certainly the tax bill) so, it is normal that these guys want to be renumerated on a similar level to other bases. . . so much for 1 happy family
I hope other bases do what they (legally ) can to help them achieve parity with those doing the same job for the same company. . . END OF.