You do not have to sign any documents in the store. However, you should report your fall as soon as possible. Ask that your fall be recorded in an incident report.  It is then the property owner’s responsibility to file their own claim with their management and/or insurance company. If someone tells you that you have to sign something- make sure you are only signing an incident report. You have to be careful that you are not signing a document that waives your rights to file a claim or lawsuit in the future. Always discuss with an experienced injury lawyer before signing any documents on a slip and fall case and do not discuss anything with an insurance adjuster before talking with a slip and fall lawyer.