Use a vacation, sick day or other kind of Paid Time Off on May 1st.
Request the day off in advance and take an approved day off on May 1st.
Call in sick. Some employers will turn a blind eye to people who call in sick to participate in the strike. However if you call in sick when you are not actually sick you are likely violating a sick leave policy and could be disciplined. You should decide for yourself if you want to risk of using this option.
Give advance notice if you are not going to work on a day you are schedule to work, it is a good idea to call your employer right before the beginning of your shift to let them know you are not coming to work so that you are not a “no call no show.”