A good on-site manager is critical to your property's success. They may show units to prospective tenants, collect rent, or perform maintenance. They may do all these things. While duties may vary, your on-site manager is the face of your building, and provides a crucial value. This value is often repaid in informal ways: cash, a yearly bonus, or most common, rent credit. These informal agreements often leave you, the employer, vulnerable to a wage-claim suit.