Man I wonder how different this story would be told by different countries tho I guess having business trips would be common no matter where you are if it's an office/sales job, I can imagine it'd be hard to get a day off for legit sickness vs fooling around with a mistress but even if it's not a distinct uniform feels like someone could still recognize him, Mirai-kuns trap aside
I guess it's good he can call about a complain with out needing some kinda serial or product number or so, tho I'd think customer service is a different job than something that's require you to go on trips even if this time is a lie , vs him handling a complaint directly bc it's another company issue /big client versus a regular citizen just buying whatever he sells