If the employer sends a contingent job offer (also known as a conditional job offer), they may later reject a candidate who doesn’t satisfy their requirements. For instance, if a job position requires an employee to operate heavy machinery, an employer might offer someone a job on the condition that they pass a drug and alcohol screening test. The Employment Offer Letter will outline this condition and any others that the candidate must meet before securing the position. If the candidate fails the test, the employer would likely withdraw the offer. The Employment Offer Letter may also become void if certain terms become impossible to fulfil. For example, if something happens that causes the company to lose a considerable amount of profits, the company may need to cut costs to save money. In this case, the company may not have the funds to accommodate the job position they were initially seeking to fill and would rescind the offer. However, these situations are rare. Employers don’t want to waste time and resources sending out job offers they later have to rescind.