How to minimize workplace negativity ???

• Provide opportunities for people to make decisions. The single most frequent cause of workplace negativity is traceable to a manager or the organization making a decision about a person’s work without their input. Almost any decision that excludes the input of the person doing the work is perceived as negative.
• Make opportunities available for people to express their opinion about workplace policies and procedures. Recognize the impact of changes in such areas as work hours, pay, benefits, and assignment of overtime hours, dress code, office location, job requirements, and working conditions. These factors are closest to the mind, heart and physical presence of each individual. Changes to these can cause serious negative responses. Provide timely, proactive responses to questions and concerns.

• Treat people as adults with fairness and consistency. Develop and publicize workplace policies and procedures that organize work effectively. Apply them consistently. 
• Treat your employees as trustworthy because they are. Start from a position of trust when you hire a new employee. Verify their performance, truthfulness, and contribution over time to confirm your original position. Do not start from a position of believing that people must earn your trust. That positioning ensures that negativity will take over in your workplace. Employees have radar machines and they are constantly scoping out their work environment. If you don't trust them they will know you don't.

• Do not create rules for all employees when just a few people are violating the norms. You want to minimize the number of rules directing the behavior of adult people at work. Treat people as adults and they will usually live up to your expectations and their own expectations.
• Help people feel included—each person wants to have the same information as quickly as everyone else. Provide the context for decisions, and communicate effectively and constantly. You cannot over-communicate if your desire is to reduce negativity and gain the confidence and support from your employees.

• Afford people the opportunity to grow and develop. Training, perceived opportunities for promotions, lateral moves for development, and cross-training are visible signs of an organization’s commitment to staff. Make your commitment to employee growth and development by creating mutually developed career path for every employee.
• Provide appropriate leadership and a strategic framework including mission, vision, values and goals. If they understand the direction, and their part in making the desired outcomes happen, they can contribute more. People make better decisions for your business when you empower them with the information they need to make decisions that strategically align with your overall direction.

• Provide appropriate rewards and recognition so people feel their contribution is valued. The power of appropriate rewards and recognition for a positive workplace is remarkable. Suffice to say, reward and recognition are two of the most powerful tools an organization can use to buoy staff morale.