Pros
Located in Downtown Tulsa with covered parking garage. Onsite health clinic for those that work in Tulsa. Flexible work schedule for some. 3 weeks vacation to start. Decent entry level experience. Inexperienced engineers or fresh graduates get thrust into critical roles. (though often times with very little support or training and due to lack of employee retention)
Cons
Extremely top heavy company. The company does not face issues head-on if those issues involve anyone above a manager. They allow harassment and bullying by upper management and managers, with no consequences. Every group operates in its own silo with little to no interaction. Operations managers in Tulsa that never leave their offices, let alone step foot in one of their operating facilities. Depending on the group you end up in -very little career development or career mobility. Constant reorganization (at least in engineering roles), where the effected employee has little or no say in what your job will be. Little care is given to make sure that these moved employees have the knowledge base / skill set or will be given access to training to gain those skills. While ONEOK advertises that they do not believe in layoffs, they will move employees to ill-suited roles to get that employee to quit on their own or will fire them for under-performing. Any previous work experience (not at ONEOK) is not valued or respected, even if it is relevant industry experience. Very conservative, slow to react company. Below market pay. Very much so a "yes man" company.