Ms. Stewart, who goes by "Cece, " was hired in 2010 to reinvigorate a business that boasts the highest average deposits per branch among top lenders but generates lower profits than those peers.

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And collaborative cultures were positively related to team cohesion, branch potency (the extent to which employees believed the branch was productive and successful), and lower levels of burnout.

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But offered lower fares if they use an Oyster card, issued by a branch of government called Transport for London, they have few objections.

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