The employee may be rewarded for improving the NPO's reputation, making other employees happy, and attracting new donors. Liabilities promised on the full faith and credit of the organization but not recorded anywhere constitute accounting fraud. But even indirect liabilities negatively affect the financial sustainability of the NPO, and the NPO will have financial problems unless strict controls are instated. Some commenters have argued that the receipt of significant funding from large for-profit corporations can ultimately alter the NPO's functions. A frequent measure of an NPO's efficiency is its expense ratio (i.e. expenditures on things other than its programs, divided by its total expenditures). Competition for employees with the public and private sector is another problem that nonprofit organizations inevitably face, particularly for management positions. There are reports of major talent shortages in the nonprofit sector today regarding newly graduated workers, and NPOs have for too long relegated hiring to a secondary priority, which could be why they find themselves in the position many do. While many established NPOs are well-funded and comparative to their public sector competitors, many more are independent and must be creative with which incentives they use to attract and maintain vibrant personalities. The initial interest for many is the remuneration package, though many who have been questioned after leaving an NPO have reported that it was stressful work environments and implacable work that drove them away. Public- and private-sector employment have, for the most part, been able to offer more to their employees than most nonprofit agencies throughout history. Either in the form of higher wages, more comprehensive benefit packages, or less tedious work, the public and private sectors have enjoyed an advantage over NPOs in attracting employees. Traditionally, the NPO has attracted mission-driven individuals who want to assist their chosen cause. Compounding the issue is that some NPOs do not operate in a manner similar to most businesses, or only seasonally. This leads many young and driven employees to forego NPOs in favor of more stable employment. Today, however, nonprofit organizations are adopting methods used by their competitors and finding new means to retain their employees and attract the best of the newly minted workforce. It has been mentioned that most nonprofits will never be able to match the pay of the private sector and therefore should focus their attention on benefits packages, incentives and implementing pleasurable work environments. A good environment is ranked higher than salary and pressure of work. NPOs are encouraged to pay as much as they are able and offer a low-stress work environment that the employee can associate him or herself positively with.