Scala Slick / ScalaQuery BigDecimal creates decimal(10,0) how to allow decimals?

How do I tell Slick to create a Decimal SQL type which allows for decimals?
It seems that by default Slick doesn't allows for decimals which I noticed with the below code. It creates a column with the data type decimal(10,0) in MySQL.

I have the following model in my Scala code:

import scala.slick.driver.MySQLDriver.simple._

case class TimeType(id: Option[Int], name: String,
  employeeMultiplier: BigDecimal, employerMultiplier: BigDecimal)

object TimeTypes extends Table[TimeType]("timeType") {
  def id = column[Int]("id", O.PrimaryKey, O.AutoInc)
  def name = column[String]("name")
  def employeeMultiplier = column[BigDecimal]("employeeMultiplier")
  def employerMultiplier = column[BigDecimal]("employerMultiplier")
  def * = id.? ~ name ~ employeeMultiplier ~ employerMultiplier <> (TimeType, TimeType.unapply _)
}

During startup I create this table using Slick unless it already exists with this code

...
lazy val database = Database.forDataSource(DB.getDataSource())

database.withSession {
  if (MTable.getTables("timeType").list.isEmpty) {
    TimeTypes.ddl.create
    ...