I hear all the time "you'll have that anywhere you go"..... but honestly... isnt there a line where you draw?

I guess one of my biggest problems is I never know if I'm getting treated unfairly or not.... I dont know where that line is.... where is the line that you say "its ok to be lied to until this point but after that point its not ok anymore" .... My morals say that honesty is it... period... 100% .... but apparently I have to accept the fact that Im always going to be lied to....

Lets say you run a company and you hire someone and tell them that you want to hear any problems they have.... that employee goes to you because they are having a problem financially and just not making it on their current pay.... what do you do? Well, obviously you cant always afford to pay them more and any employee needs to be able to understand that.... but when you make a decission of what to do you should make sure everything else indicates that what your decission was is the case. Let's say you can't give them the money they need... what do you do? Do you simply explain to them whats going on or do you attack their personal finances and start telling them where their faults are related to something that you know nothing about.... is that the best route to take? So you indicate to them that the company can't afford a pay raise at the moment.... immediately following that do you hire more people in different departments?

Sadly, this is not all hypothetical stuff.....

I dont know what I need to tolerate and what I need to stand up for. There are times you have to accept stuff. Am I expecting to enjoy work? No.... there is a reason why you get paid to work.... its not because it's entertainment for you... it's work.... I do know that no matter where I go I will have days that I just hate my job.... thats part of working..... but where is the line drawn..... What is fair and what is unfair..... or is there no such thing as unfair in the employment area?

I just dont understand.....