this is a very tough and delicate question
you have to weigh the scale, and look on both sides
הפסד מצוה כנגד שכרה, ושכר עבירה כנגד הפסידה
1) is the wage increase worth to have such a termendous struggle? (if you got 1200 & now it will be 1400 is 200 worth it?)
2) is the challange something that you feel that its stronger then you can possibly overcome?
3) is it a real challange, or its just the way YOU see it? (are they realy trying to get you, or you think so, just because they dress attractively, which is usualy the case)?