Rams begin search for new assistant coach
Slater’s appointment as assistant to Glenn Morrison was confirmed in September, but the Rams coach will now seek out a replacement ahead of the 2013 season.
"When Rich took the job he was interviewing for a senior position at work, and the great thing for him is that he got the job," explained Morrison.
"But he thought about how it would affect his role with us and spoke to me about it, and he wants to do the right thing for the club.
"Rich doesn't think he'd have been able to put in as many hours as he would have liked, or give the club the commitment it deserves, so he's taken the decision to stand down.
"It's a shame because he's a good bloke. I've worked with him before and he was the first bloke I went to when I got the job. He was really excited about it as well.
"But he's putting the club's interests first here and that's a great thing for him to do. It's disappointing that he can't do the job, but he remains a big supporter of what we're trying to achieve at the Rams."
Morrison added that he has already opened talks with prospective candidates for the now vacant assistant coach's position.
"I'm speaking to a number of highly-qualified coaches about the role," he confirmed.
"I want to make sure it's the right person. There are a number of under-20s coaches who are unemployed and looking for projects now and hopefully within a fortnight we'll be able to make an appointment."