PA perfoirmance appraisal is an important part of your work.

It’s shows how things you did in a reflects the quality of your work over the past year.

Supervisors use it forto estimate how much salary that the company should give you.

At that time, they will also set the goals for your future. with the company.

And iIt’s also athe time to communicate with your boss.

You’d better spend time on preparing for it.

Performance appraisalreviews

“Reviews” sound more casual and natural than “appraisal”

Performance appraisal isreviews are an important part of your work.

It’s shows how things you did in a year.

Supervisors use it forto estimate how muchthe salary that the company should give you.

At that time, they will also set the goals for your future.

For workers, performance appraisal isreviews are important too.

You’d better spend time ton preparinge for it.

Performance appraisalreview is an important part of your work.

"review" is the technical term here.

It’s shows how things you did in a year.

A few directions this sentence can go but this feels like it's kinda in the middle.

* It shows how things went for you for the year.
* It shows how well you did for that year.

Supervisors use it for estimate how much salary that the company should give you.

This sentence is close to good, but "estimate" implies that this is a preliminary calculation, not that this is what becomes your salary. More accurately, the supervisor might "estimate your value to the company" by evaluating your performance, and then from that "value to the company" determine your salarly.

For workers, pPerformance appraisalevaluation is important toofor workers, too since it pertains to their future.

A bit of a rewording for naturalness, but also brought in the next sentence. However, "relates to your future" doesn't work when speaking of "workers" in the third person, so "pertains to *their* future" instead.

If this is being written directly to workers of a company, then I guess "you" instead of "their" can work, but in the abstract I would stick to second person for the whole essay.

It’s related to your future.

And it’s also a time to communicate with youtheir boss.

Communicate what to their boss?

Performance appraisalreview is an important part of your work.

"Appraisal" is usually used when you are describing the monetary worth of an object (like a gemstone, or a car). "Performance review" or "performance evaluation" are the specific terms used by most English-speaking companies.

It’s shows you how thingswell you did in alast year.

Some more detailed sentences could be "It shows you whether you met expectations last year" or "It shows you how well you performed last year".

Supervisors use it forto estimate how much salary that the company should give you.

Phrasing it like "how much salary" makes it seem more like they're deciding your entire salary. I think what you wanted to say was "how big of a raise the company should give you".

Instead of "estimate", you should say "determine" since the company normally isn't guessing when it comes to raises (I hope).

At that time,During performance reviews they will also set theyour goals for your futurethe coming year.

For workers, performance appraisalreview is important too.

And iIt’s also a good time to communicate with your boss.

You’d better spend time on preparing for it.