In my essay, I will explore thepossible parts of job satisfication ,as well as how realistic the expectation is.
This is a very important statement for this essay. This is the one you should use to align your writing with what your topic asks from you. This sounds out of topic. The prompt asks you ;
What factors contribute to job satisfication?... this is not about possible parts of job satisfaction but the factors that contribute for a person to have job satisfaction.
My suggestion;
In this essay, I intend to discuss about some important factors that help people to achieve job satisfaction and also to analyse how realistic is the expectation of job satisfaction for people at work.Even though there are plenty of factorsthat l ead to perfect job,the most direct one is fair rewards, which is the best motivation offor employees.
Let suppose that if a worker makes huge sacrifices and commitments to company in the absence of adequate prizes, negative attitudes will ensue, not to mention job satisfication.
... you cannot have both "let" and "suppose" It should be either "let" or "suppose"