It pains me to say, but virtually everything else is a con. They promote and encourage a browser line abusive style of management. It comes directly from executive, and has an obvious effect on the company moral.
I’ve seen so many good reviews, many of which I could point to as colleagues. Please take them with a grain of salt. The last few years, it had come to the attention of HE/executive staff that turnover was becoming a huge issues, especially with driver positions. They’ve started a huge project to overhaul their Glassdoor and online presence to lure more applicants in to help solve the turnover rate. The issue is that they haven’t made any substantial efforts to improve the lives of employees. Instead, they chose to harras managers internally to write Glassdoor reviews in their favor; gently reminding them that they were gracious enough to promote them, and it’s the least you could do for the company.
I tell you this out of immense compassion, unless you need employment desperately, please don’t consider Clean Harbors. It’s a world of false promises, neglect, massively unsustainable work loads, and abusive management. This company was once such an amazing force, but is now just another corporation being run to the ground with greed.