I know there's a lot of complains that the game is already too easy, but this one just bothers me conceptually. Basically it doesn't make a whole lot of sense the girls would refuse to do most jobs. It doesn't really make sense for slaves OR free girls.
Slaves techincally shouldn't be able to refuse ANYTHING. I don't know exactly how slaves work in the world of Whoremaster, but I'm assuming the master has some sort of magical means to control the slave. Otherwise they'd just try to escape on a regular basis. Now it makes sense the slave may not WANT to do something, but in this case wouldn't a happiness and health (assuming the master has to discipline the slave to get her to cooperate) drop make more sense then the slave not performing the task?
With free girls it actually makes even less sense. These girls were hired legitimately, and want to work. During the hiring process you'd HAVE to let it be known at some point that you run a brothel. Unless they are stupid, they would know what kind of 'work' that's going to be required of them. Yet ask them to do the job they were hired for and...they simply refuse?! This makes no sense; if someone went to their job in real life and refused to do any work, they'd be fired on the spot and they'd know it. While it makes sense that the girl might refuse extreme fetish sex, it does not make any sense that they'd refuse to clean the bedding or serve drinks in the bar.
What if rebelliousness affected the girls willingness to agree to work for you at all? ie if a rebellious girl came up on a walk, there would be a large chance she'd refuse to work at a brothel. The only way to get these girls would be to resort to kidnapping. This is something that would take a lot of work to overhaul and don't expect to be changed, but it's just something I wanted to throw out there.