That is the case I believe in the vast majority of states. Some states have online or mail-in only voting but they are a small minority. California does have an extensive (and awesome - they even send a voter guide to explain all of the measures on the ballot) mail-in ballot system and also requires employees to give time off to people to vote if they request. I can't remember if it's paid time off or not but I'm pretty sure it is.
Unfortunately that is not the case in most states and many states are making things worse by closing as many polling stations as they can get away with to force people to drive to polling stations (they should be in walking distance) and then wait in line. Oh then they cut polling station operating times so that they can turn away people in line when the doors close.* Again, this is being done as part of the theory that anything that makes it harder for the poor to vote helps the Republicans who are passing these laws.
And there is even videos of various Republicans admitting to both voter suppression and gerrymandering as cornerstones of their election strategies. I'm not kidding, you can find the videos online. You have to be willfully ignorant to see it any other way.
*It's rarer for the Republicans to mandate that polling stations turn people away who are in line but it does happen. In any case they know that there is a very high probability that if they herd enough poor people into far away polling stations with 5 hour lines then a large proportion of them will give up and go home because of a million valid reasons like having to get up early the next day to go to work.