Arizona. I'm salary Excutive manager( 3 years ) ,who have been absure by my boss , I'm looking for another job so I can quit, after I have meeting to complaint about the boss, about working condition. They known I 'm going to leave, but I'm not give any notice yet.,they hire my replacement, and 2 weeks later they give aletter that I will leave by 02-15 or be terminated. I do complaim to the HR corporartion , They offer me a demotion position w/ reduction my salary. I;m not accept , so they fired me . I'm a good worker, no any document before. Do I have a case ,contructive, wrongfull terminated
Can I clam in EEOC.

On the basis of what is in your post, no, you were not wrongfully terminated and have no grounds to complain to the EEOC or any other agency.

Thanks for repl.So in Az law ,the emloyee can get terminated when he said he going to quit?

The only state in which that would be illegal is Montana, and even in Montana that would be legal in some circumstances.