def METHOD_NAME(self, worker_id: str) -> bool:
    """Get the registration status of a worker"""
    self.ensure_worker_exists(worker_id)
    with self.table_access_condition:
        conn = self._get_connection()
        c = conn.cursor()
        c.execute(
            """
            SELECT is_blocked from workers
            WHERE worker_id = ?
            """,
            (worker_id,),
        )
        results = c.fetchall()
        return bool(results[0]["is_blocked"])