Startups utilize a casual attitude in some respects to promote efficiency in the workplace, which is needed to get their business off of the ground. In a 1960 study, Douglas McGregor stressed that punishments and rewards for uniformity in the workplace is not necessary, as some people are born with the motivation to work without incentives. This removal of stressors allows the workers and researchers to focus less on the work environment around them, and more at the task at hand, giving them the potential to achieve something great for their company.
This culture has evolved to include larger companies today aiming at acquiring the bright minds driving startups. Google, amongst other companies, has made strides to make purchased startups and their workers feel right at home in their offices, even letting them bring their dogs to work. The main goal behind all changes to the culture of the startup workplace, or a company hiring workers from a startup to do similar work, is to make the people feel as comfortable as possible so they can have the best performance in the office.