What are some rules in chapter 8 that the Concord Corporation requires?

There are a number of rules revealed in chapter 8. Some are explicitly revealed, and some are implied.
On page 56, Lyddie is pressed into spending the last of her money on clothes for her work at the Concord Corporation—"work apron, shoes, and bonnet." The implication is that it is a rule to be smartly dressed. Unfortunately for her, the new work clothes can't prevent her from feeling embarrassed on her first day. She is still acutely conscious of being out of place.
The second rule is implied on page 57 by the line, "on a regular workday there was no leisure time except the less than three hours between supper and curfew." This implies that one rule is that the girls must work long hours, although we are not told the exact times.
The third rule is outlined by one of the other girls, Betsy, on page 57, when she tells Lyddie that "the corporation requires regular attendance (at church) of all its girls." Betsy explains that this is an expectation because it "makes us look respectable."
The fourth rule, or requirement, is outlined on page 60, when Lyddie learns that she must have a smallpox vaccination, which is described as follows: "a doctor cruelly gouged her leg and poured a mysterious liquid directly into the wound."
And finally, the fifth rule of the Concord Corporation, outlined by Mrs Bedlow on page 61, is that she, Lyddie, must take care to arrive for work on time: "You must always take care to be here when the bell rings."

One of the first "rules" that Lyddie learns about that the corporation has for its girls deals with their appearance. Mrs. Bedlow and the other girls in the house are quick to let Lyddie know that her current clothes are not good enough to get her hired and work for the factory. It isn't necessarily a firm rule that the girls dress with a bit of class, but the implication is strong enough to force Lyddie to spend a great deal of her money on new clothes.
Another rule that the corporation has for the girls is that they all must attend some kind of church regularly. Lyddie is shocked by the rule. A few of the girls agree with her, but they also know that they must go to church to keep their jobs.
Lyddie is also required to have a vaccination of some kind. Lyddie doesn't understand it, and she is horrified when the injection site begins to turn color, but the other girls tell her that she will not get the "pox" after being vaccinated.