Just sharing you this information if it helps;

One Chinese friend of mine got similar trouble. He needed copies of his latest pay-stub, employment offer letter, and a letter stating that his employment status has not changed at all. The US embassy in China asked him to get those documents faxed directly from our office. After getting those documents faxed, he was cleared off in a week.

I believe this scrutiny is not for you, but for your employer. So, you should be OK if your employer does not have issues.