You hire a moving company in California because moving is hard work and you need help. These people move houses for a living, so they have the power and experience to get to the heart of the matter, but do you think keeping them happy can help increase their productivity? Hiring a mover is a good commercial moving experience, rather than doing packing in your own way.
A well-known governance principle is that happy workers do more than disgruntled workers. Since you're basically hiring these people for a few hours, you're kind of tempting. It doesn't take much to make most people happy, so here are some ideas to help you prepare.
Tipping is a great way to show that you value the service of others. This applies to many industries, but it can also apply to your California moving company. There's nothing wrong with telling the crew that if they do a good job there's little more for them.
As a general guide, you should give around forty dollars if you hire one person, or about twenty dollars per person if you employ two or more people. Of course, if you think they did an excellent job, you can tip more. Remember to consider the difficulty of the movement. Things like stairs and heavy or bulky furniture can make moving your stuff much more complicated and you should try to understand this in your advice.