No. However, as an employee I -- and you, too, I suspect -- would rather not be treated as a disposable labor unit who can be gotten rid of at will. And I also think that it is in the employer's best interest to avoid that as well.
But, as one that has studied economics as a discipline - like I have at the undergraduate level and through separate book reading - that is exactly how I view myself...a labor unit with a price tag that can, and will, change abruptly with the conditions of the market for the knowledge, skills, and abilities that I can bring to the table. I know you don't believe this about me but I am being quite serious and genuine here.