As long as he has six months completed here and salary credited in the account, he can apply for family RP. Salary increment is okay, suppose if his salary was 10000 before and now 10000+ (for last two months) it is okay. Maybe if it is less than 10000 before and 10000+ for last 2months can be a problem, wait for six months salary to be credited as more than 10000.... When I was applying for my family RP, even i was holding an increased salary, but in my case my salary was always 10000+, so there was no problem.... Hope this clears the air, Good Luck;...