Ch 8 Managing Employees' Performance

There are several ways for effective performance management.
1- Fit with strategy, 2- Validity, 3. Reliability 4- Acceptability, 5- Specific Feedback. All of these are good way how an employee is doing and performing. I like the reliability, if a employee is doing his or her job and you can count on them to do what is needed and on time that that is good enough for me. I feel that I have a very high expectation for people at work and I think that I as well as them should work hard and be dependable to do your job fast and correct.
In the book it talks about rating workers on a scale of how they are doing. I think in my job it is either a yes or no, we keep you or we don’t that simple. Some people if we think that they are half way there we try them out for a while and then if they can hack it good buy this job not for you.
QUESTION
Do you think that it is better to tell them you are reviewing them or just do a review on them? And then just fire them if they are not doing well, and not try to teach them to do the job right or teach them and give them one more shot?