If you seek to please them so that Christ might be pleased, you are on the right track. If you do it so that they would come to know Christ, then you are honoring God and fulfilling the Great Commission on the job. Household stewards or business managers in New Testament times were frequently slaves. They had considerable opportunity to misappropriate money, food, jewelry, or other valuables entrusted to their care. Things aren't much different today.
Employees submit inflated time sheets and expense reports.
They take home office supplies for personal use. They use company time, company phones and company computers for personal concerns. Theft by employees costs companies millions of dollars each year. The costs of goods and services would be less if people would stop stealing from their employers. Instead of dishonesty and pilfering, a Christian should demonstrate to his employer that he can be trusted in everything.