Fraud/Theft
Theft is the intentional taking of property without consent. In terms of seriousness, it is separated into two categories: "over $5,000" and "under $5,000" Theft offences can include shoplifting and taking from one's employer. Note that it is a specific intent offence, and therefore if the taking was unintentional, or the item was taken with "color of right", these are complete defences. For example, if you put an item under your arm in a store, forget about it, and walk out, this is not theft, it is a mistake and not deserving of criminal punishment.
Generally speaking, theft from an employer is treated most seriously, as the law considers it a "breach of trust." Make sure that if you are called into your employer's office, and allegations of theft are made, that you obtain legal advice before answering questions!
For minor thefts and frauds, please note that diversion programs are available, which can result in the charge(s) being withdrawn.
Fraud is the (even temporary) deprivation of someone else's goods or property interest, in circumstances of objective dishonesty. Note that there does not need to be actual loss for there to be a fraud, and even if your intent was always to pay back all "borrowed" funds, a fraud has still occurred. In essence, the crime is in the dishonest way in which you have obtained the goods or money. For example, if you ask others to invest in a non-existent venture, so that you can use their money to buy real estate without their knowledge, believing you can turn a profit and repay the investments, you have still committed fraud. There may be no monetary loss but a fraud has still occurred as they were unaware of the risk being undertaken.
If you are being investigated for an economic crime, you need to consult a lawyer.