Everyone's favorite enemy: Human-Resources.
I have the perception that people in HR think they have more influence than they actually do.
Background:
I work in a rather large software company. Some months ago, an employee at my workplace has requested an increase in pay after working with us for a while without any increase.
His supervisor approved it without question, but HR outright blocked it without providing any reason. The supervisor escalated this to his manager, but still could not get a response from HR. When then escalation continued, and we're almost at the top person now, no response could obtained from HR.
Another story:
I am currently sharing an office with someone at our client's site. Someone from the HR department just walked in looking for them as part of a "site inspection", basically just wanting to "check up on them".
Another story:
I have heard many cases where HR has summoned employees to their office for various reasons.
My (perhaps incorrect) view is that I report to my supervisor and HR are just clerks to whom I do not answer. How can they overrule upper-level management, summon people, and go around "checking up" on staff?
My question is:
How much authority does HR actually have in the workplace? Are they in the right in the scenarios I mentioned above, or am I just hating too much?