Workplaces were under more pressure from industry bodies to be responsible hosts for their staff, for instance providing food if serving alcohol on site, he said.
"It's for the right reasons too and it's all about keeping everyone safe.
"I actually think it's a great thing."
Younger patrons enjoying an after-work beer were "a heck of a lot more" responsible with their drinking than a couple of decades ago, he said.
Study authors master's graduate Benjamin Walker and management school senior lecturer Todd Bridgman conducted in-depth interviews with employees at an un-named professional services organisation in Wellington.
Mr Walker was surprised to discover the extent to which alcohol featured in the workplace.
"Alcohol is commonly used to facilitate team bonding and for presenting a friendly, informal image when networking with clients.
"It's the way the organisation celebrates success, as well as the way new employees are inducted into the organisation," he said.
The researchers found that social events where alcohol was involved could even be a deliberate form of managerial control.
"Through positive reinforcement using events involving alcohol, [the organisation] succeeded in prompting workers to work harder," the study said.
The Employers and Manufacturers Association said Friday night drinks were common practice for many businesses.
"Having staff congregate and network outside their usual connections within an organisation can be very good for staff morale and help with team building," spokesman Gilbert Peterson said.
This helped keep people engaged in the business and contributed towards worker productivity.
A Service and Food Workers Union spokeswoman said their members did not enjoy such workplace benefits, as most were hospital cleaners or rest home workers.
Workplace drinks culture was probably more widespread in the corporate sector or government departments, she said.
Dr Andrew Hearn of the Health Promotion Agency said the research provided interesting insights into the dynamic of alcohol and the workplace, and highlighted unintended effects on work of alcohol use.
"Expectations of the job, such as not turning up with a hangover, means that employees 'save up' their drinking until the weekend," he said.
The study was published in the International Journal of Drug Policy.
- Additional reporting Teuila Fuatai