What is a common type of restriction included in a shareholders' agreement?

A common type of restriction included in a shareholders' agreement is indeed the clauses against competing with the company's business. These clauses, often referred to as non-compete clauses, are designed to protect the interests of the company and its shareholders by preventing individuals from engaging in business activities that directly compete with the company’s operations. This is important because it helps maintain the company's market position and ensures that confidential information, which could be leveraged by competitors, is safeguarded.

The presence of such clauses is significant, as it fosters a collaborative environment among shareholders, ensuring that they are all aligned in their goals and not undermining each other’s stake in the company. It ultimately contributes to the stability and success of the business, creating a framework where shareholders can work together without the fear of direct competition undermining their collective progress.

Other options like regulations on employee bonuses or specifications for office equipment do not typically fit the context or purpose of a shareholders' agreement, which focuses on the relationships and responsibilities among shareholders rather than operational or employee matters. Requirements related to employee retirement funds also fall outside the scope of shareholder agreements, as they are more concerned with employee benefits and compliance with labor laws rather than shareholder interests.