Letting you all know that I have had this very same issue from the first day City Life came out and I started playing it. One of my sims has maxed out in her Food Critic career and does not get a single raise despite completing her daily tasks every day and her work progress being Excellent with the check mark. Several weeks passed with that and she hadn't received a raise. To add comparison, her husband in the household is an astronaut at max level and whenever his bar is maxed regardless of him completing the daily task or not he receives a raise and the bar resets. ]
I'll add that I have tried a few possible solutions to fix this - the cheat code, which did not work for me (Apparently there are several different variations for the food critic one and I have tried all), and I had her start back from level 9 and getting promoted once more to level 10 but to no avail. Mind you whenever I use the career cheat on another sim who is maxed in a different career it works and the game gives them the raise no issue. I sincerely think that this is a bug and an issue.